Mass and Volume
What tool do we use to measure mass?
Balance Scale
Name a magnetic material.
Iron, nickel, or cobalt
If an object sinks in water is it more or less dense than water?
More dense
Is metal a conductor or an insulator?
Conductor
What does it mean if a substance is soluble?
Which has more mass: a bowling ball or a basketball?
Bowling Ball
What happens when two like poles of a magnet are brought together?
They repel
Will a cork float or sink?
float
What type of material is a good insulator?
Rubber, plastic, wood
Name a substance that is insoluble in water.
Sand, plastic, oil
What happens to the volume of water when you pour it into a different shaped container?
It stays the same.
Why are most plastic and wooden objects non-magnetic?
They don't contain iron, nickel, or cobalt.
How can you change the density of water?
Add salt or another substance
Why are electrical wires covered in plastic?
To prevent electric shock.
How can you increase the speed at which sugar dissolves in water?
stirring, heating, crushing
How can we measure the volume of an irregular object?
water displacement
How do magnets hep in everyday life?
Refrigerator doors, compass, various machines
Why does ice float on water?
It is less dense than liquid water.
Why does a metal spoon feel colder than a plastic spoon in the same room?
Metal is a much better conductor of heat, so it draws heat away from your hand more quickly, making it feel colder.
What happens to the mass of salt after it dissolves in water?
What is the difference between mass and weight?
Mass is the amount of matter in an object. Weight is the force of gravity on that object.
If an object is magnetic, does it always conduct electricity?
No, some metals are magnetic but not conductive.
Which is denser honey or vegetable oil?
Honey
What is the difference between thermal and electrical conductivity?
Thermal deals with heat transfer; electrical deals with electric current.
What is the difference between a mixture and a solution?
A mixture can be easily separated. A solution cannot.