A teacher wants to perform a classroom demonstration that illustrates both chemical and physical changes. Which

Chemistry

2 answers:

wariber [46]3 years ago

5 0

It would be dissolving sugar in water/burning a candle

NeX [460]3 years ago

3 0

Answer:

dissolving sugar in water

burning a candle

Explanation: these both have chemical and physical changes happening to them.

You might be interested in

Does the model below represent a mixture or a substance ?

Vikentia [17]

Answer:

substance

Explanation:

A mixture is when two or more different atoms/molecules are together, but not joined.

A substance is when the same atom/molecule is in a group together.

In this example, it is a substance because it is comprised of the same molecule not joined all together. If you wanted a mixture, other colored atoms/molecule (e.g. add green atoms) would change it to this property.

4 0

3 years ago

Draw a Lewis structure and indicate the hybridization for each molecule that contains more than one interior atom. Draw the Lewi

alexdok [17]

Answer:

See figure 1

Explanation:

In this question, we have to remember that each carbon has 4 electrons and each hydrogen has 1 electron. Additionally, the structure proposed have to have 8 electrons for each atom (except hydrogen). With this in mind, we need to have a double bond between the carbons, because in this arrangement each carbon would have 8 electrons (octet rule).

See figure 1

I hope it helps!