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S3w4 Tuesday Bellringer

Last updated 5 months ago

12 questions

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Question 1

1.

Chemical Changes involve:

A . the original substance existing at the end

B . A new substance forming at the end

C . Energy changes

D . no change in energy

E . a physical change

F.  Ability for original substance to be separated if it is a mixture

Question 2

2.

Physical changes involve:

A . existence of the original substance at the end

B . a new substance forming

C .  Always a change in energy

D . Sometimes a change in energy 

E.  Chemical Change

F.  Ability for original substance to be separated if it is a mixture

Question 3

3.

Is dissolving a physical or chemical change?

A . Physical

B . Chemical

Question 4

4.

are reactions a chemical or physical change?

A.  Physical

B . Chemical

Question 5

5.

Is slicing something in half a physical or chemical change?

A . Physical

B.  Chemical

Question 6

6.

Water in liquid heated to form water in steam form - is that a physical or chemical change?

A . Physical

B . Chemical

Question 7

7.

When a chemical breaks into two new chemicals is that a Physical or Chemical change?

A . Physical

B . Chemical

Question 8

8.

4 Fe + 3 O2 ----> 2 Fe2O3

A . Physical

B .  Chemical

Question 9

9.

Solid water turning into liquid water

A . Physical

B . Chemical

Question 10

10.

HCl + CaCO3 -----> HCO3 +CaCl (acid/liq.) + (base) (gas) (salt/solid)

A . Physical

B . Chemical

Question 11

11.

Milk souring is

Physical change

chemical change

Question 12

12.

is digestion by a fungus a chemical or physical change?

A . Physical

B.  Chemical