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dexar [7]
3 years ago
12

Why does a solid change to liquid when heat is added?

Chemistry
2 answers:
sveticcg [70]3 years ago
8 0

Answer:

It is because the space between particles decreases but also loses energy at the same time.

Explanation:

Free_Kalibri [48]3 years ago
3 0
The answer is C, the molecules and atoms start vibrating causing them to space out when fast enough.
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Describe the R group found within an amino acid
madreJ [45]

Hello!

An amino acid has five basic parts. An amino group, a carboxyl group, a central carbon atom, a hydrogen, and a R group.

The r group is the side chain specific to each amino acid. The r group varies between each kind of amino acid, while everything else stays the same. Therefore, the r group decides the identity of the amino acid.

Hope this helps! Let me know if you need a more specific explanation.

5 0
3 years ago
Choose the pure substance from the list below. choose the pure substance from the list below. lemonade wine air juice salt
vfiekz [6]
I believe the answer is salt. because it is a compound of two distinct elements that can be broken down without changing the properties of substance.
A pure substance is a substance that are made up of only one type of an atom or one type of a molecule. Pure substances may be further broken down into elements and compounds.
3 0
3 years ago
3 Points
svp [43]

Answer:

C. Splitting the atom

Explanation:

splitting the atom involves fission

4 0
3 years ago
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In this prelab exercise, you will calculate how to prepare solutions that you will make in lab. Below is an example of how to pr
Anastasy [175]

Explanation:

Molarity=\frac{\text{Moles of compound}}{\text{Volume of solution (L)}}

Moles of compound =

\frac{\text{mass of compound}}{\text{Molar mass of compound}}

We have ;

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Moles of NaOH = n

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Mass of 1.800 mole sof NaOH :

1.800 mol × 40 g/mol = 72.0 g

Preparation:

Weight 72.0 grams of sodium hydroxide and add it to the 500 mL of volumetric flask along with some water. Dissolve the all the solute by adding small proportion of water. After the solution becomes clear make the water upto the mark of 500 ml.

Transfer the solution to a bigger beaker  and 100 mL of water more to it.

6 0
3 years ago
A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific
icang [17]
It is a scientific hypothesis. A scientific hypothesis must be testable, however there is a significantly more grounded necessity that a testable speculation must meet before it can truly be viewed as logical. This foundation comes essentially from crafted by the rationalist of science Karl Popper, and is called "falsifiability".
3 0
4 years ago
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