Ax Look at each answer choice. Decide whether it is an example of a chemical or physical change. THREE answer choices are

Question

examples of chemical changes. THREE answer choices are examples of physical changes.
Chemical Change
Physical Change
:: After pouring baking soda into vinegar, it begins to fizz
:: Putting two cubes of ice into a soda
:: An iron nail slowly rusts and turns reddish-brown
:: Painting the walls of a dollhouse red
:: Lighting a match
:: Breaking a matchstick

Answer 1

Here are the classifications of the provided examples:

Chemical Changes:

1. After pouring baking soda into vinegar, it begins to fizz (a chemical reaction occurs).
2. An iron nail slowly rusts and turns reddish-brown (oxidation).
3. Lighting a match (combustion occurs resulting in new substances).

Physical Changes:

1. Putting two cubes of ice into a soda (phase change, no new substances formed).
2. Painting the walls of a dollhouse red (changing appearance, but the chemical composition remains the same).
3. Breaking a matchstick (change in shape, no new substances formed).

So, the three examples of chemical changes are:

1. After pouring baking soda into vinegar, it begins to fizz.
2. An iron nail slowly rusts and turns reddish-brown.
3. Lighting a match.

And the three examples of physical changes are:

1. Putting two cubes of ice into a soda.
2. Painting the walls of a dollhouse red.
3. Breaking a matchstick.