Answer:
For a material to be considered as building material, it should have required engineering properties suitable for construction works. These properties of building materials are responsible for its quality and capacity and helps to decide applications of these material. Such properties of building materials are categorized as follows. 1. Physical properties 2. Mechanical properties 3. Chemical properties 4. Electrical properties 5. Magnetic properties 6. Thermal properties
Explanation:
Would you feel like a superhero if you could melt metal just by holding it? The element gallium is a solid at room temperature, but it will reach
its melting point and melt if you hold it in your hand. If you pour the liquid gallium into a container at room temperature, it will become solid
again. How do the melting point and the freezing point of gallium compare to each other?
O A The freezing point of gallium is higher than its melting point
O
B. The freezing point of gallium is lower than its melting point.
O
C. The freezing point of gallium equals its melting point.
OD
Both the freezing point and the melting point of gallium vary.
Answer:
C is your correct answer i blieve
The element gallium has equal freezing point and melting point owing to which on pouring liquid gallium in container it becomes a solid.
What is an element?An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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What is a coordinate bond
Answer:
Explanation:
The coordination or coordinate bond, also known as a dative covalent bond or bipolar bond, is a covalent bond in which a pair of electrons shared by two atoms is contributed by only one of them. The atom that gives the pair of electrons is called the giver and the recipient, receiver.
Answer:
a type of covalent bond between two atoms in which the bonding electrons are supplied by one of the two atoms
Explanation:
What are the three basic forms of matter?
Answer:
Solid, Liquid, and Gas!
Explanation:
What state of matter has the most energy in its molecules
Answer:
Gas
Explanation:
What is the volume of a 16.24 g sample of magnesium in cubic centimeters? Show a numerical setup and result for credit.
Answer:
9.34 cm³
Explanation:
From the question given, we obtained the following data:
Mass of magnesium = 16.24 g
Volume of magnesium =.?
To obtain the volume of the magnesium sample, we simply apply the formula for calculating the density of samples. This is illustrated below:
Mass of magnesium = 16.24 g
Density of magnesium 1.738 g/cm³
Volume of magnesium =.?
Density = mass /volume
1.738 = 16.24/volume
Cross multiply
1.738 × volume = 16.24
Divide both side by 1.738
Volume of magnesium = 16.24/1.738
Volume of magnesium = 9.34 cm³
Therefore, the density of the magnesium sample is 9.34 cm³.
which phase of matter is the rarest in the solar system
Answer:
liquid
Explanation:
Answer:
liquid
Explanation:
pls help it’s due at 12
Answer:
it's
D. 2K + 2H2O
Explanation:
it just is
do you think pokemon is bad
what element has 16 protons in it's nucleus?
Do all systems have Inputs and Outputs? I’m sorry I’m really dumb
Which of the following is a characteristic of both scientific laws and
scientific theories?
A supported by much scientific evidence
B explain why something happens
C based on opinions of scientists
D describes what happens
revious
Answer:
A supported by scientific evidence
Help ASAP
Which one of these is an example of cell division at work?
A: A tree grows taller.
B: A plant dies.
C: A dog digests food.
D: A muscle contracts.
Answer: A tree grows taller.
Explanation: Cells divide for many reasons. They may divide for growth, death, or to replace something. The cells divide when growth is happening, to allow to produce more cells. For example: When a tree grows taller the cells divide so they can produce more cells. The places in trees where these cell divisions happen, are called “Meristems”. This is where all the activity happens.
please let me know if this helps! have a great day!
Are atoms the smallest particles we know about, or are there smaller ones?
Answer:
That we know about yes, but physicians still say there are more things out there. (we do not know about these yet tho)
Explanation:
can someone help me with this question its confusing
ASAP
Answer:
temperature
Explanation:
(6.2 x 10 5 ) / (2.5 x 10 -3 ) =
(6.2 x 10 5 ) x (2.5 x 10 -3 ) =
solve each scientific notation
Answer:
651/22 and 14322
Explanation:
Imagine that you're writing a paper on the topic of ocean acidification. Find two articles about ocean acidification on the Internet that you could use in your research. Name them Source 1 and Source 2, and include a link to each source. Be sure to also include the name of the website or organization that published the source.
Answer:
See explanation
Explanation:
When you are writing a scholarly paper, you have to conduct a thorough search for source materials online. These sources must be reliable, credible and contain verifiable information. In a project such as writing a paper on the topic 'ocean acidification', the following materials are relevant;
Source 1) 'Functional impacts of ocean acidification in an ecologically critical foundation species,'; Brian Gaylord, Tessa M. Hill, Eric Sanford, Elizabeth A. Lenz, Lisa A. Jacobs, Kirk N. Sato, Ann D. Russell, Annaliese Hettinger; Journal of Experimental Biology 2011 214: 2586-2594; doi: 10.1242/jeb.055939
Source 2) 'Impacts of ocean acidification on marine fauna and ecosystem processes'; Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C. ; ICES Journal of Marine Science, 65: 414–432; doi: 10.1093/icesjms/fsn048
which one represents an element
Answer:
B
Explanation:
why is it that you can not feel earths movement but you can observes its effects
a) a rotates
b) earth revolves
c) earth only moves once a year
d) earth has gravity
2. What is the total energy equation?
Total energy = kinetic energy * potential energy
Total energy = kinetic energy - potential energy
Total energy = kinetic energy + potential energy
Total energy = kinetic energy / potential energy
Answer:
Kinetic energy + Potential energy
someone please pleaseeee help me
Perform the following mathematical operation, and report the answer to the correct number of significant figures.
1.987/3.46 =
Answer:
I don't know sorry, you could use a calculator
Explanation:
i don't know
This process of heat transfer by conduction would NOT work __________
A) in space.
B) in a solid.
C) under water.
D) in the atmosphere.
Science
Answer:
B and C are the correct answers.
Explain how cooking is a real
world example that models how
the atoms from the reactants
rearrange and come together in
different arrangements to form
new substances.
Answer:
Explained below
Explanation:
In chemistry, the process of a chemical change is when the atoms from the reactants rearrange themselves and bond together differently to form one or more new substances with different characteristics than the reactants. Now, after this new substance is formed, the change is called a chemical change.
Now, in cooking Food will undergo a chemical change as it is being cooked. For example, when we boil brown meat, we are causing reactions that change the chemical composition in ways that enhance flavors. Proteins and fibers such as beans when cooked are broken down or undergo denaturation thereby making digestion easier when eaten. Fats like cooking oils are melted while Eggs when boiled are coagulated.
What type of weather is associated with a continental polar air mass?What is a front?
Answer:
I would guess that a polar air mask would be freezing, high winds type weather. I think that's right.
Answer:
Cool and dry
Explanation:
Exactly what it is on Edge
I know I am late to answer but for the points and for the people that need it
If 0.243 g of magnesium is reacted with hydrochloric acid, the amount of acid required would be:
Answer
0.496g
Explanation:
All you have to do in this problem is multiply .243 g by 2.04, which is the universal shortcut for these acid problems.
Which is the best way to determine if an object is made of pure silver
Answer:
The Nitric Acid Test
Explanation:
The Nitric Acid Test is used to check if silver is pure or plated. To do so, file a small part of the item in a discreet area where it cannot be seen. Apply a few drops of nitric acid. If the area turns into creamy white, the silver is pure or sterling. If green, it is probably fake or silver-plated.
how many significant figures in 4300 ?
Answer:
Four significant figures
Explanation:
The number of significant figures is defined as the number of digits that can be assumed to be correct, starting at the left with the first nonzero digit, and proceeding to the right.
What element has 80 protons, 81 neutrons, 79 electrons?
Answer:
The element will be [tex]^{161}_{80}X[/tex]
Explanation:
Given that,
Number of proton = 80
Number of neutron = 81
Number of electron = 79
We know that,
The atomic number is equal to the number of proton.
So, the atomic number is 80.
According to atomic number,
The element will be mercury.
We need to calculate the atomic mass
Using formula of atomic mass
[tex]atomic\ mass=atomic\ number+number\ of\ neutron[/tex]
Put the value into the formula
[tex]atomic\ mass=80+81[/tex]
[tex]atomic\ mass=161[/tex]
We need to find the element
Using atomic mass and atomic number
[tex]atomic\ mass\ number A=161[/tex]
[tex]atomic\ number Z=80[/tex]
So, the element will be
[tex]^{A}_{Z}X[/tex]
Put the value of A and Z
Hence, The element will be [tex]^{161}_{80}X[/tex]
Which of the following statements is true about neutrons?
a)They have a neutral charge and are found in an atom's nuclues
b)They have a negative charge and are found in an atom's nucleus
c)They have a positive charge and are found in the orbitals of an atom
d)They have a neutral charge and are found in the orbitals of an atom
Answer:
A
Explanation:
Protons are positive
Neutrons are neutral
Electrons are negative
Protons and Neutrons are in the nucleus
Electrons are orbiting around the nucleus
The statement that is true about about neutrons is that They have a neutral charge and are found in an atom's nucleus.
What are neutrons?Neutrons are electrical charge that is form in the atoms of elements which is neutral that is it's is neither positive or negatively charged.
Neutrons have no charge , they are neutral.
Therefore, The statement that is true about neutrons is that They have a neutral charge and are found in an atom's nucleus.
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What is conserved in physical changes?
shape
energy
mass
density
Answer:
The answer is C.
Explanation:
By the Law of conservation of mass, when a element, or product undergoes a physical change, mass always stays the same.
Hope you have a good day.
During physical change the mass of the material remains conserved. The correct option is C.
What is physical change?Even before to and after a physical change, the material implicated is unique architectural the same.
Physical changes include texture, shape, heat, and the beginning of a change in the state of matter. The texture of a substance influences how it feels.
A physical change is simply a change in appearance. The situation has not changed since the change.
Physical change can be seen in the use of cutting paper, melting butter, dissolving salt in water, and breaking glass.
Mass is neither created nor destroyed in chemical or physical changes, according to the law of conservation of mass.
Physical changes occur when the phage of a substance changes without changing its chemical composition.
Thus, the correct option is C.
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What's another word for hypothesis
Answer:
Explanation:
theory
theorem
thesis
conjecture
supposition
speculation
postulation
postulate
proposition
premise
surmise
assumption
presumption
prediction