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yarga [219]
3 years ago
6

A teacher wants to preform a class room demonstration that illustrates both chemical and physical changes. which would be the be

st demonstration she could use
Chemistry
1 answer:
sp2606 [1]3 years ago
8 0

Answer:

D) burning a candle

Explanation

When burning a candle no new substance is form.

We have both physical and chemical change occuring.

Physical part: Melting of the solid wax and evaporation of the liquid forms the physical change.

Chemical part: burning of the wax vapour forms the chemical change.

Explanation:

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BigorU [14]

Answer:

C

Explanation:

A physical change is when the form of the matter is just altered. While a chemical change results from a chemical reaction. No reaction is happening during the mixing of the two colors [nothing is boiling, freezing, evaporating, melting ext.] , but after you mix them the end result does look different. That only because we changed the physical properties of it.

(B is not a physical change because the baking powder inside of the cake must under go a reaction that causes the cake to rise. )

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Explanation:

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3 years ago
The capacity of the air to hold water vapor is basically a function of
Kisachek [45]
It is basically the function of evaporation.
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3 years ago
Which statements correctly describe the rock cycle? Check all that apply.
pickupchik [31]

Answer: I italicize for checking

  1. <em>Rocks are preserved through the process.</em>
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  5. <em>Environmental conditions influence a change in rock type.</em>

Explanation:

Rocks are preserved, as in you can't destroy them completely, but no, they don't <em>stay </em>the same they change.

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