Physical Vs. Chemical Change HW

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

1

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

1

Is dissolving a physical or chemical change?

A . Physical

B . Chemical

1

Is reactions a chemical or physical change?

A. Physical

B . Chemical

1

Is slicing something in half a physical or chemical change?

A . Physical

B. Chemical

1

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

A . Physical

B . Chemical

1

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

A . Physical

B . Chemical

1

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

A . Physical

B . Chemical

1

Solid water turning into liquid water

A . Physical

B . Chemical

1

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

A . Physical

B . Chemical

1

Watch this video. what do you think:
physical or chemical change?

A . Physical

B . Chemical

1

Watch this video. is digestion by a fungus a chemical or physical change?

A . Physical

B. Chemical

Chemical Changes involve:

Physical changes involve:

Is dissolving a physical or chemical change?

Is reactions a chemical or physical change?

Is slicing something in half a physical or chemical change?

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

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

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

Solid water turning into liquid water

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

Watch this video. what do you think:physical or chemical change?

Watch this video. is digestion by a fungus a chemical or physical change?

Chemical Changes involve:

Physical changes involve:

Is dissolving a physical or chemical change?

Is reactions a chemical or physical change?

Is slicing something in half a physical or chemical change?

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

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

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

Solid water turning into liquid water

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

Watch this video. what do you think:physical or chemical change?

Watch this video. is digestion by a fungus a chemical or physical change?

Watch this video. what do you think:
physical or chemical change?

Watch this video. what do you think:
physical or chemical change?