Chemistry High School

Students were given four unknown substances and asked to observe their
characteristics. Their observations are shown in the table below:



Which of the unknown substances is MOST likely a metal?

Students Were Given Four Unknown Substances And Asked To Observe Theircharacteristics. Their Observations

Answers

Answer 1

Answer:

b

Explanation:

Related Questions

Please help me

Identify each thermal energy scourge as Conduction (A) Convection (B) Radiation (c)

Answers

Answer:

I think it is...

1) A

2) C

3) A

4) B

5) A

6) C

Explanation:

I'm so sorry that I'm so late, I just wanted to answer it to help you. I don't know if you got graded on it already, but hey, I tried :)!

how do you write out 4,5-dimethyl-4-octene

Answers

you can see the answer at the pic

What is Aerosol,sol and gel​

Answers

Aerosol: When particles of solid or liquid get dispersed in a gaseous medium, the mixture is known as Aerosol. ... Sol: Sol is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid. • Gel: Gel is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid.

What are the reactants of photosynthesis?

Answers

Answer:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas. The single chemical equation represents the overall process of photosynthesis.

Explanation:

Lime stone is a sedimentary rock that contains calcium this type of rock typically forms in warm shallow marine waters. Which process is involved in distributing calcium before it becomes part of the sedimentary rock?
A) tectonic movement
B) weathering
C) a biological process
D) volcanic activity

Answers

Answer:

the answer is B!!!

Explanation:

Oxygen atoms have six outer electrons

Write the symbol for an oxide ion.

Answers

Answer:

[tex]O^{2-}[/tex] is the symbol for an oxide ion

When coal is burned, sulfur is released into the air, where it reacts with oxygen to produce sulfur dioxide and sulfur trioxide. Which of the following is true of this process?

A. The identity of each reactant remains the same.
B.Sulfur dioxide and sulfur trioxide are the reactants in this change.
C.The products have different chemical properties than those of the reactants.
D. The products contain more sulfur atoms and fewer oxygen atoms than the reactants.

Answers

Answer:

c

Explanation

they have different properties now

Answer will be ‘C’. The products have different chemical properties than those of the reactants.

You are about to take a short trip. However, you will not be traveling by car or bus; instead you will be traveling up in a hot air balloon. You know that hot air balloons, like the ones pictured, are able to rise when the air contained in them is heated. Why does the balloon rise? What is happening at the molecular level to make the balloon rise?

Answers

Answer:

Hot air rises. Heated air molecules “spread out” or expand and bounce around, and the space becomes less dense than the surrounding space. Increasing the air temperature inside the balloon envelope makes it less dense than the air, thus making it “lighter than air”.

Explanation:

I'm new to brainly but I hope this helped!

Balloon rise because  Warm air ascends. Heat causes the molecules of the air to "spread out," or expand, and bounce off one another, making the area less dense than the surroundings.

What are molecules ?

A molecule is the smallest unit of a substance that keeps its content and properties. It is made up of two or more atoms that are joined together by chemical bonds.

Chemistry is built on molecules. The element symbol and a subscript indicating the number of atoms are used to identify molecules.

When Balloon rise because  Warm air ascends. Heat causes the molecules of the air to "spread out," or expand, and bounce off one another, making the area less dense than the surroundings.

The air inside the balloon's envelope becomes less dense as the temperature rises, making it "lighter than air."

To learn more about molecules, refer to the below link:

https://brainly.com/question/14130817

# SPJ2

What is the mass of 8.250 moles of Cu2O?

Answers

Answer:

How many moles CU2O in 1 grams? The answer is 0.0019838596354237. We assume you are converting between moles CU2O and gram. You can view more details on each measurement unit: molecular weight of CU2O or grams The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CU2O, or 504.06792 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles CU2O and gram. Type in your own numbers in the form to convert the units

Which scenario is an example of primary succession?

A.
the formation of soil after a volcano


B.
the growth of weeds after a flood


C.
the establishment of a forest in an abandoned crop field


D.
the recovery of grassland after a fire

Answers

Answer:

the answer to your question is A

Please help me thank you! Stay safe

Answers

Answer:

number 3

Explanation:

Explanation:

it's the third graph

values are put directly without scaling

What is wrong with the answer, 10.5 x 10^3? Think about the proper form used to show a number in scientific notation.

Answers

Answer:

1.05 × 10^4.

Explanation:

The proper scientific notation will be

1.05 × 10^4.

Which group on the periodic table ways to lose electrons?

Answers

Answer:

Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions. Metals that are located in column 1A of the periodic table form ions by losing one electron.

Explanation:

hope it helps!

What happens to particles in a solid when heat is applied? (3 points)

a
They move around more.

b
They get closer together.

c
They reduce in size.

d
They stop moving.

Answers

A. They move around more.

Answer:

They move arond more

Explanation:

Water molecules are polar because the
water molecule has a linear shape.
water molecule has a bent shape.
oxygen atom has fewer electrons around it.
hydrogen atom forms an ionic bond with oxygen.

Answers

Answer: B (water molecule has a bent shape)

Explanation:

Water molecules are polar molecules because of their shape. Water molecules have one side that is positively charged due to hydrogen atom which is partially positive and the other side which is negatively charged, due to the oxygen atom.

When two molecules get close to each other the polar forces of attraction brings them close to each other. Oxygen bonds with several hydrogen atoms in the other water molecules resulting to hydrogen bonds.

Answer:

the answer is B

Explanation:

Which of the following sets of data could match the unknown element?

Answers

Answer:

✔️Metalliod, Mass: 73

Explanation:

The unknown element that is represented in the Periodic table is Germanium (Ge). It is in Group 14(IVA) and Period 4 of the periodic table. It is a metalloid and a silvery-gray substance. It's properties are intermediate between metals and nonmetals. It has a mass of 73 and an atomic number of 32.

Help please and explain so I could see you didn’t guess

Answers

Answer:

A

Explanation:

because the acid in your stomach can break down anything that you eat causing you to have to use the restroom

Why is the nitrogen cycle considered a closed system?

Answers

Answer:

because nitrogen is fixed by bacteria and assimilated by plants

Explanation:

Answer:

It is a considered a closed system because nitrogen is fixed by bacteria and is taken in by plants.

Explanation:

A student drops a 95g object into a graduated cylindor that has 30ml of water in it. After the object is added to the cylinder the water level reads 63ml. What is the density of the object? ​

Answers

Answer:

The answer is 2.88 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 95g

volume = final volume of water - initial volume of water

volume = 63 - 30 = 33 mL

We have

[tex]density = \frac{95}{33} \\ = 2.87878787...[/tex]

We have the final answer as

2.88 g/mL

Hope this helps you

According to the law of conversion of mass in a chemical equation

Answers

The Law of Conservation of Mass
In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

ANSWER FAST PLEASE!!
Ali rolled a ball down a hill. This graph shows the kinetic and potential energy of the moving ball.

A line graph The graph is titled Mechanical Energy and shows an inverse relationship between Potential energy and Kinetic Energy. The Y axis is Potential energy (J). The X axis is Kinetic energy (J). The point of the graph are as such: (0, 5); (1, 4); (2, 3); (3, 2); (4, 1); (5, 0)

According to the graph, what is the mechanical energy of the ball?

A. 0 J
B. 5 J
C. 20 J to 25 J
D. 0 J to 4 J

Answers

Answer:D

Explanation:

Hope I helped

When we plot the relation between kinetic energy and potential energy, we get an inverse line. The mechanical energy of an object is the sum of kinetic energy and potential energy. . The mechanical energy here is 5 J.

What is mechanical energy?

Mechanical energy of an objects is the sum of it energy of motion and the stored energy of position, that is the sum of kinetic energy and potential energy.

Kinetic energy of an object result from its motion whereas potential energy results from the position of the object. Both kind of energy depends on the mass of the object.

Kinetic energy also depends on the velocity of the object and potential energy depends on the height and gravity experienced by it. Both are thus directly proportional to the mass of the object.

Here, all the points in the graph have a total energy of 5 J . for example for the first point the sum is 0 +5= 5J. Similarly, all the points have a total of 5 J.

Therefore, the mechanical energy of the system is 5J and the option B is correct.

To learn more about mechanical energy, refer the link below:

https://brainly.com/question/12319302

#SPJ5

How do I do this problem???

Answers

Answer:

i believe it's c

Explanation:

my reason is that if you look at the electrons 2 is the most comm

How do you think chemical change is defined?

Answers

A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.

Answer:

A chemical change happens when one chemical substance is transformed into one or more different substances,

Explanation:

How do you calculate mass and velocity does that equal to a certain amount of more energy or no

Answers

Answer:

The formula is: p=mv

(P)momentum is equal to (m) mass times (v) velocity.

Explanation:

What would happen if there were 3 protons and 0 neutrons in the nucleus of an atom?

Answers

Answer:

the atom will be positife atom

Question 9 (2 points)
What is the only part of the scientific method that can be proven wrong?
A/

Answers

Answer:

hypothesis

Explanation:

hypothesis is only a guess at what will happen. So it is possible that it could be wrong.

Which of the following is a CORRECT statement?


Chemical change cannot be undone or reversed.


Physical change often cannot be undone or reversed.


In chemical change, you end up with the same substance you started with.


In physical change, particles of 2 or more substances rearrange to form new or different substance.

Answers

ANSWER: Chemical change cannot be undone or reversed.

Answer:

Detail is given below.

Explanation:

1) Chemical change cannot be undone or reversed.

The given statement is correct. Because,

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible .

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood  and this reaction can not be reversed.

2) Physical change often cannot be undone or reversed.

The given statement is incorrect.

Physical Change                                                                                              

The changes that occur only due to change in shape or physical properties but their chemical or internal composition remain unchanged.  

These changes were reversible.

Example :

Water converting to Ice

Water converting to gas

3) In chemical change, you end up with the same substance you started with

The given statement is incorrect. Consider the following example.

The reaction of Hydrogen and oxygen:

H₂ (g)  + O₂  (g) -------------------------------------> 2H₂O  (l)

A totally new compound is formed when oxygen and hydrogen are undergo reaction which is water.

4) In physical change, particles of 2 or more substances rearrange to form new or different substance.

The given statement is incorrect.

When particles rearrange them selves the different substance is not formed. Consider the example of water when it converted into ice or vapors. Only phase is changed but water retain its properties so new substance is not formed.

Please help first one two answer will get brainliest!
Type the correct answer in the box. Spell all words correctly.
Stacy finds a gun at a crime scene. Which part of the gun should she never touch?
Stacy knows never to touch the __________
with her hands or any other object so she does not accidentally discharge the weapon.

Answers

Answer:

the trigger . it's the trigger

Answer:

It is the handle

Explanation:

I know because I did this test in school

Explain three ways the periodic table is organized. Include in your essay the
definition of two listed trends and the patterns observed for each of your selected
trends on the periodic table

Answers

Answer:

The periodic table is organized in non-metals metals and metalloids, in in terms of trends and patterns you may want to talk about the the density of the elements or the mass of per unit of measurement of whatever you're going to use sorry that could be much help but I hope it helps.

The compound, BeCl2, would be formed by
a. The sharing of all electrons
b. The transfer of all electrons
c.
The transfer of valence electrons
d. The sharing of valence electrons

Answers

Answer:

The sharing of valence electrons

Explanation:

A covalent bond is formed when two or more atoms share valence electrons.

In BeCl2, electrons are shared between the beryllium atom and two chlorine atoms.

Owing to the large difference in electronegativity between the two elements, the bond is polar covalent.

Other Questions
A circle has a diameter of 18 inches. If 1 inch is approximately 2.54 centimeters, what is the diameter in centimeters? A) 5.9 centimetersB) 45.7 centimetersC) 20.5 centimetersD) 42.3 centimeters Which of these is most likely to form a normal distribution?10 dice rolled 100 times10 dice rolled 1 times10 dice rolled 1000 times010 dice rolled 10 times Calculate the effective charges on the H and F atoms of the HF molecule in units of the electronic charge, e. Two different linear functions are shown below with two points given from each function Use slope-intercept form Function A has The equation of line A is or point-slope form to find the equation of each.Linear Function APoints : (-5, -2), (-5, 7)Linear Function BPoints : (7, -5), (-2, -5)Which is true about the following:1. Function A has...A: Slope of -7B: Slope of 0C: Slope of 9D: No slope2. The equation of line A is :A: X= -5B: Y= -5C: X= -2D Y= 7Function B has...A: Slope of -7B: Slope of 0C: Slope of 9D: No slopeThe equation of Line B is :A: X= -5B: Y= -5C: X= -2D: Y= 7 Which characteristic is essential to look for in a healthcare provider? The provider has a brand new practice. The provider has no special qualifications. The provider has the appropriate certifications. The provider accepts only premium insurance. Energy Transfer and Temperature Quick Check4 of 4ItemsItem 4Use the table to answer the question.Sample Temperature (C)L 40M 88N 21The table shows the temperature of three water samples. Which list shows the samples in order from greatest to least average kinetic energy of the water molecules?(1 point)L, M, N N, L, M M, L, N N, M, L What does the point (0, 35) represent? What kind of leaf is this The amount of fuel remaining in a gas grill is a function of the number of hours, h that the grill has been used. This relationship can be expressed by the function below. F(h) = 100 - 2h Determine and represent the domain of this function for the problem situation using inequality notation. Which best explains a difference between Einsteins general theory of relativity and his special theory of relativity?His general theory includes uniform and accelerated motion, but his special theory applies only to uniform motion. His general theory includes uniform and accelerated motion, but his special theory applies only to accelerated motion. His general theory applies only to accelerated motion, but his special theory includes uniform and accelerated motion.His general theory applies only to uniform motion, but his special theory includes uniform and accelerated motion. Conducting experiments, using inquiry, and asking testable questions are processes that are used by Hey guys if your bored what should i do or you guys do btw i miss all of you i will always love you as i always i try my best to remember cause i got a car accident and i remember now some of all of you i love yall stay safe bye!! Is 25 x 10 to the power of 0 in scientific notation? If not, explain. Use pencil and paper. Explain why 10 is used as the base in the second scientific notation factor. Which phrase best describes igneous rocks?form when lava and magma coolaccumulate sediments following erosionrequire heat and pressure to be formedconsist of many sediment layersctivity QUESTION 6Which statement is true about graded potentials?a. They always produce action potentials.b. They always depolarize a neuron.c. They change the voltage of a neuron by different amounts.od. They are "all-or-none."Click Save and Submit to save and submit. Click Save All Answers to save all answers. Identify the change of state occurring in each situation. your friend's perfume producing an aroma that fills the room making ice cream from milk in an ice cream maker formation of frost on a cold windshield overnight wax dripping from a candle naphthalene solid (found in moth balls) producing fumes in the closet to deter moths your breath fogging up on your car windshield on a cold winter day 8) On Tuesday Heather bought six hats. OnWednesday half of all the hats that she hadwere destroyed. On Thursday there wereonly 19 left. How many did she have onMonday?PLS HELP Most economic activities on this feudal manor were related to what? a. guilds b. industry c.banking d.agriculture A dull metal object has a density of 8.8 G/ML and a volume of 20 ML calculate the mass Should it matter if areas far from large cities lose population?