What causes a static charge
Answer:
Separating or rubbing materials.
Explanation:
Static electricity occurs when positive (+) or negative (−) electrical charges collect on an object's surface. There are several ways this condition can be caused.
How is heat transferred when a person steps on hot sand?
O A. From the sand to the feet
O B. In both directions between the sand and the feet
C. From the feet to the sand
O D. Heat is not transferred.
Answer:
Explanation:
Heat moves from hot sand to the bottoms of your feet by conduction. Conduction is the transfer of heat between objects that touch each other.
Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.
What is Conduction ?Heat conduction is a phenomenon that occurs through the interaction of neighbouring atoms and molecules, transferring their energy/heat (partially) to their neighbours.
This is the most significant means of heat transfer within a solid and between solid objects in thermal contact.
Conduction is the transfer of heat between objects that touch each other.
Therefore, Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.
Learn more about Conduction here ;
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i neeeed helllllpppppsss
Answer:
1.0 g/cm3
Explanation:
yeah that's the density of water
Answer:
a 1 g/cm3
Explanation:
per google- A common unit of measurement for water's density is agram per milliliter (1 g/ml) or 1 gram per cubic centimeter (1 g/cm3)
8. Calculate the mass of 3.47x 1023 gold atoms.
Answer:
the answer is 1.227
What is the BEST scientific definition of the term “force”?
Answer:
Any unapposed interaction that will change the motion of an object.
Explanation:
My physics teacher had us write this down last week.
Convert the following number into scientific notation: 88,000,000.
A 8.8 x 10⁶
B. 88 x 10⁴
C 8.8 x10⁷
D. 8.8 x 10-⁷
5
Calculate the mass of a liquid with a density of 2.5 g/mL and a volume of 15 mL.
7
Calcule la masa de un líquido con una densidad de 2.5 g/mL y un volumen de 15 mL.
A. 375 g
B. 3.75 g
C. 37.5 g
Answer:
The answer is option CExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume of liquid = 15 mL
density = 2.5 g/mL
We have
mass = 15 × 2.5
We have the final answer as
37.5 gHope this helps you
1. John travels from the United States to Australia for the winter, but when he gets there it feels more like summer. Why?
Answer:
In Australia, it's warmer than most of the United States during winter.
Explanation:
In my closet, I have 5 black shirts, 6 brown shirts, 3 light blue shirts, 5 white shirts, 2 green
shirts, 4 navy blue shirts. What is the total number of shirts?
Explanation:
i think if you add them all the total is 26
Answer:
25 shirts
Explanation:
5+6=11+3=14+5=19+2=21+4=25 (if u dont understand how I wrote that then) 5+6=11, 3+5=8, 2+4=6
11+8=19, 19+6=25
Photosynthesis occurs in
the mitochondria
chloroplast
The model of a neutral element is shown below. Which particle determines the reactivity of the element?
A
B
C
D
what does science explain? (4 points)
A) moral values
B) biased opinion
C) meaning of life
D) natural phenomena
Answer:
D
Explanation:
Kwkekkfkekwknmxmdlwlmcfmkee
Earth is approximately 149,600,000 kilometers away from the sun. How would this distance be expressed in scientific notation?
Answer:
bo
Explanation:
I dont know nothing cuz am that smart and yes am cool wait I have to wait 67 seconds am not done answering you questions I will be back in a few....
This is a very long thing, Answer any of the questions that you can please anything helps just make sure you put the numbers for the questions you answer:
Question 1: Laws of Conservation of Matter and Energy (2 points)
a. Law of conservation of matter (1 point)
i. What does the law say about matter?
ii. What about matter can change and what does not change, according to the law?
b. Law of conservation of energy (1 point)
i. What does the law say about energy?
ii. What about energy can change and what does not change, according to the law?
Question 2: Phases of Matter (2 points)
a. What are the four states, or phases, of matter? Describe the shape and volume properties of each phase. Can they change, or are they fixed? (1 point)
i. _______________________
Shape:
Volume:
ii. _______________________
Shape:
Volume:
iii. _______________________
Shape:
Volume:
iv. _______________________
Shape:
Volume:
b. When heat energy is absorbed by matter, the matter's temperature increases. When heat energy is released by matter, the matter's temperature decreases. The matter can also change from one phase to another when heat energy is absorbed or released. Identify whether matter absorbs heat or releases heat as each of the following phase changes occur. (1 point)
i. From solid to liquid (melting)
ii. From liquid to solid (freezing or hardening)
iii. From liquid to gas (evaporation)
iv. From gas to liquid (condensation)
Question 3: Types of Energy (4 points)
a. List four kinds of energy. Give a brief definition of each. (1 point)
i. ______________________________________________________________
ii. ______________________________________________________________
iii. ______________________________________________________________
iv. ______________________________________________________________
b. Energy can change from one form to another. Describe the energy conversions in the following scenes. (1 point)
i. A kid falling out of a tree
ii. A scout rubbing sticks together to start a fire
iii. A man running a kerosene heater
c. What is the equation for calculating gravitational potential energy on the Earth? (1 point)
d. What is the equation for calculating kinetic energy (1 point)
Matter cannot be created or destroyed.
Further explanationConservation of mass applies to a closed system, where the masses before and after the reaction are the same
Or
Conservation of mass means:
In a closed/isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.
So what changes is the form, into a liquid, gas or solid
while what does not change is the mass
Sara slides down a playground slide. How will friction affect her as she slides?
Answer:
Friction is a force that occurs whenever two objects rub against each other, such as a slide and a person's backside. Without friction, a slide would accelerate the rider too quickly, resulting in possible injury. Certain materials called lubricants can reduce the effects of friction. This is why water park slides are much faster than playground slides; the water acts as a lubricant. Sitting on wax paper can also reduce the amount of friction.
Explanation:
Which is another name for groups of elements?
Answer:
another name for groups of elements is family.
Answer: The Periodic Table of Elements
Explanation: The Periodic Table of Elements is a table with different elements arranged in an order, usually in vertical rows of two.
An atomic model shows 19 protons, 20 neutrons, and 19 electrons. What is the mass number of the atom?
A. 39
B. 20
C. 58
D. 19
Answer:
A. 39
Explanation:
Mass number= #protons + #neutrons
19+20= 39
Taking into account the definition of mass number, the correct option is the option A: the atomic mass of the atom is 39.
First of all, all atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them. Protons are positively charged, neutrons are neutrally charged, and electrons are negatively charged (electrons).
On the other hand, the mass number tells us the total number of particles in the nucleus. That is, the mass number is the sum of the number of protons and the number of neutrons in the atomic nucleus:
Mass number = (number of protons) + (number of neutrons)
It is represented by the letter A.
In this case:
number of protons= 19number of neutrons= 20So:
Mass number = 19 + 20
Solving:
Mass number= 39
In summary, the correct option is the option A: the atomic mass of the atom is 39.
Learn more:
https://brainly.com/question/11837355?referrer=searchResultshttps://brainly.com/question/1758023The variable placed on the horizontal or x-axis of a graph is what variable
Answer:
Independent variable
Explanation:
A compound such as CaCl, would have an overall charge of?
Calcium Chloride would have a charge of +2
Hopes this helps :)
Add a neutron to create carbon-13. Is this isotope stable or radioactive?
why can liquids not be compressed easily
Answer :The reason why compression is more difficult is a direct illustration of quantum mechanics.
Pleaseee help meeeeeee
Answer:B
Explanation:
Heat boils it will get hot no heat/cold will freeze
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the
reaction?
O The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products.
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products,
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products.
The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products.
Answer:
A
Explanation:
Question:
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the reaction?
Options:
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the products.Answer:
A.) The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products.
Explanation:
I just did the test on edge 2020 and got it right!
10. How many protons, neutrons, and electrons are present in the
140 +3
Ce ion?
Name: Cerium
Symbol: Ce
Atomic Number: 58
Atomic Mass: 140.116 amu
Number of Protons/Electrons: 58
Number of Neutrons: 82
48 points
Chemistry is the study of 1.
& its interactions. Matter has
2.___, takes up 3. ____& is made up of 4.____
from the
periodic table. Each element in the periodic table has a different
5. ____structure. You can use the information in the periodic square of
each element to model its basic atomic structure. The three subatomic
particles that make up atoms are the 6. ___charged protons & the
7. ____neutrons are both located in the nucleus, & the 8.____
charged electrons are found orbiting the nucleus. The element's
9. ____number is equal to the number of protons, & identifies the
element. The element's atomic mass is equal to the number of protons
plus neutrons in the 10.____
The atomic charge on atoms in the
periodic table is 11. ____; so the number of electrons in a neutral atom
is also equal to the 12. ____number. Charged atoms are called
13. ____If an atom looses an electron from its neutral state it becomes a
positively charged 14. ____If an atom gains an electron it becomes a
negatively charged 15. ____Atoms with a different number of
neutrons are called 16.___
and they also differ in mass. *
Answer:
1. Matter
2. Mass
3. Space/Volume
4. Substances
5. Atomic
6. Positively
7. Neutrally charged
8. Negatively
9. Atomic
10. Nucleus
11.
12. Atomic
13. Ions
14. Cation
15. Anion
16. Isotopes
Answer:
Give that person Brainly now :)
Explanation:
1. Any atom that is electrically neutral must contain -
Answer:
The same number of electrons and protons.
Explanation:
Because a proton has a charge of +1 and an electron has a charge of -1, the ratio of protons to electrons must be 1:1 for the atom to be neutral.
Please answer fast!
Where in an atom are protons located?
A.
in the nucleus
B.
in areas of probability
C.
in orbitals
D.
in the photons
Explanation:
they are located in the neucleus
Answer: they are located in the neucleus
Explanation:
Group/Family
Noble gases
Metals
Nonmetals
Halogens
Metalloids
Period
1.
A
2.
B
3.
C
4.
D
5.
E
6.
F
7.
G
Answer:
1. Metals
2. Metaloids
3. Non-Metals
4. Alkali Metals
5. Transition Metals
6. Halogens
7. Noble Gases
A baby weighs 3.91 kg and measures 51.4 cm. Convert the baby's weight
to pounds and its length to inches
Compared to gases liquids can be easily compressed. True or false?
Answer:
true
Explanation:
Answer: false, gases can be more easily compressed than liquids.
Explanation: They're easier to compress because there's much more empty space between the gas particles.