Are PHYSICAL or CHEMICAL changes reversible?
Physical
______ makes up everything around us.
Matter
What is it?
Reversible
Is photosynthesis a PHYSICAL or CHEMICAL change?
Chemical! It is irreversible.
TRUE OR FALSE? Solids have a definite volume.
TRUE
When ice cream melts, is that a PHYSICAL or CHEMICAL change?
Physical
What is it?
Gas
What is it?
Physical change
Combustion is the reaction of wood with _____ (hint: gas).
Oxygen
What is it?
Solid
What is it?
Volume
What is it?
Chemical change
TRUE OR FALSE? Solids take on the shape of their container.
FALSE
Do SOLIDS or LIQUIDS have no definite shape?
Liquids
What is it?
Liquid
Give one example of a chemical change.
Example: oxidation/rusting.
Sand: solid, liquid, or gas?
Solid
Give one example of a physical change.
Example: Ice melting.
Play-dough: Solid, liquid, or gas?
Solid
Oxidation is the reaction of metal with _____ (hint: gas).
Oxygen
Describe an instrument we use to measure volume.
Example: a cylinder or a beaker is usually made of glass and has numbers to read measure.
Coffee: solid, liquid, or gas?
Liquid
Clouds: solid, liquid, or gas?
Gas
What is it?
Shape
_____ do not have a definite volume or shape.
Gases
During digestion, our body turns our food into energy. Is that a PHYSICAL or CHEMICAL change?
Chemical