Changes
When paper is cut up.
Physical change
Name the chemical name for Na, H, He and K
Sodium, Hydrogen, Helium, Potassium
Picking up a pen is...
Physical change
An element is...
made of 1 type of atom. Can be bonded or unbonded
When a new substance is created.
Chemical Change
A compound is...
When 2 or more different elements are bonded together.
When you mix cornstarch with iodine
Chemical Change
A mixture is
2 or more different elements where some are bonded and some aren't making it easy to separate.
Describe the difference between a physical and chemical change.
Physical change is a change of state, shape or size but doesn't create a new substance.
Chemical change a new substance is formed like a change in colour, not reversible reaction.
What are these substances.
Flour, Pure water, Copper, Iron, Milk
Flour and Milk - Mixture
Pure water - Compound
Copper and Iron - Element