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Dvinal [7]
3 years ago
13

What is an exothermic chemical reaction?

Chemistry
1 answer:
Anastaziya [24]3 years ago
4 0
Exo, meaning "out-", thermic meaning heat or temperature
Outgoing heat or a release of energy in the form of heat or light
Reactant -> Product + Energy

Therefore, the answer is D, it is a reaction that releases heat to its surroundings
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Two gas molecules collide together in a box container. Which reaction accurately portrays the kinetic molecular theory?
Inga [223]
In this theory, gas molecules are deemed to be at constant random motion and have perfectly elastic collisions with each other. They bounce of each other. These particles are assumed to have a spherical shape. Also, there are no attractions between the molecules.<span />
8 0
4 years ago
How does liquid turn into gas? (Question for my sister)
kodGreya [7K]
If you were to take water (like many other materials) and break it up into almost the smallest things you could, you’d get molecules. If the molecules are stuck together really tightly in a regular pattern, then they’re called a solid. The solid form of water is ice. This actually makes a lot of sense, because it certainly does seem like all the little parts of a solid (like ice) are stuck together very tightly.

When you heat something up, it makes the molecules move faster. If you heat up a typical solid, it melts and becomes a liquid. In a liquid (like water), the molecules are still stuck together, but they can move around some. What actually happens is that the molecules are still sort of sticking together, but they’re constantly breaking apart and sticking to different molecules. This also makes sense when you think about water. Water sort of sticks together, but it breaks apart /really/ easily.

If you heat a liquid like water up even more (like if you put it in a pot on the stove), then the molecules will move around so fast that they can’t even hold on to each other at all. When this happens, all of the molecules go flying apart and become a gas (like when you boil water to make steam). The process of gas molecules leaving the liquid to go into the gas is called "evaporation." The opposite process is called "condensation."

<span>Hope this answers your question!</span>
4 0
3 years ago
V\3. The atomic masses of any two elements contain the same number of _
SashulF [63]

a. atoms

Explanation:

Let's take as example carbon and lead. Carbon have an atomic mass of 12 a.m.u while lead have an atomic mass of 207 a.m.u. Value of atomic masses are the same with as the value of molar masses. So carbon have a molar mass of 12 g/mole while lead have a molar mass of 207 g/mol.

Avogadro's number it tell us that in 1 mole of particular substance there are 6.022 × 10²³ particles. Taking in account this, in 12 g of carbon there are 6.022 × 10²³ carbon atoms and in 207 g of lead there are 6.022 × 10²³ lead atoms atoms.

The atomic mass of any two elements contain the same number of atoms.

Learn more about:

Avogadro's number

brainly.com/question/1445383

brainly.com/question/1528951

#learnwithBrainly

6 0
3 years ago
The ability of a substance to dissolve in another is called
Luden [163]

Answer: Solubility

Explanation:

7 0
4 years ago
Read 2 more answers
What kind of information do unit conversions give?
Damm [24]
The answer is C because the unit conversions gave an equal amount but with other units
7 0
3 years ago
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