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Helen [10]
4 years ago
10

What describes a change that occurs when one substance reacts to another substance?

Chemistry
1 answer:
Slav-nsk [51]4 years ago
8 0
A chemical or physical change
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What is the density of a substance that has a volume of 14 millimeters and a mass of 13.2 grams.
Contact [7]

Answer:

<h2>0.94 g/mL</h2>

Explanation:

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

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{13.2}{14}  \\  = 0.94285...

We have the final answer as

<h3>0.94 g/mL</h3>

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If gas particles start colliding with the walls of their metallic container with increased force, what is their direct effect? l
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The answer is B) Higher gas pressure.
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all atoms must have 6 protons to be a carbon atom

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2 years ago
A scientist finds that a sample of matter contains three types of atoms. The sample can be any of the following, except:
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Answer:

The correct answer is C. element

Explanation:

The sample cannot be an element because an element - or <em>elemental substance</em> - cannot be decomposed into simpler substances. Thus, it cannot be composed by differents types of atoms. For example, an element is carbon (C).

As the sample contains <u>three types of atoms</u>, it can be a compound, a molecule or a mixture, because they can be composed by different types of atoms - of different chemical elements. For example, the sample could contain the element carbon (C) combined with other elements, for example oxygen (O) or hydrogen (H), amoing others.

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3 years ago
35. In the collision theory, a collision that leads to the formation of products is called an
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Answer:

It's Effective Collision.

Explanation:

Hope my answer has helped you!

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