What is matter?

• It is everything in Spain

• It is everything around us

• It is everything that is solid

• It is everything that flies

There are 3 states of matter:

• Rocks, water and air

• Beaker, cylinder and lab

• Solid, liquid and gas

They have definite volume and shape. They are...

• Solids

• Liquids

• Gases

They have definite volume but not a definite shape. They are...

• Solids

• Liquids

• Gases

They don't have definite volume or shape. They are...

• Solids

• Liquids

• Gases

The changes in matter are reversible when...

• they don't return to their original shape

• they return to their original shape

The changes in matter are irreversible when...

• they don't return to their original shape

• they return to their original shape

The physical changes of matter are always...

• reversible

• irreversible

What are chemical changes?

• When different forms of matter can react and make a new form of matter.

• When different forms of matter can react and later come back to their original shape

• When ice melts and becomes liquid

The Chemical Changes are always...

• reversible

• irreversible