States of Matter & Particles
What are the three main states of matter?
liquid, solid, gas
What is evaporation?
Liquid to a gas
What is a physical change?
Changes shape or state
Rolling clay into a ball is what kind of change?
Physical
How do particles in a solid move?
Don’t move at all
What is condensation?
Gas to liquid
What is a chemical change?
Makes a new substance
Clay drying into a hard solid is what kind of change?
Physical
Do particles in a liquid move?
Yes, but not as much as gas. Liquid stays in the form of the container.
When water evaporates from a cup, what happens to the mass?
The mass/ weight is less
Which is a sign of a chemical change?
A. Shape change
B. Color change
C. Cutting
D. Folding
To allow electricity to flow, a material must be a?
Conductor
How do particles in a gas move?
Move freely and spread out
If I blend a bunch of fruit in a blender does the mass/weight change?
No
Mixing ingredients in a blender is what kind of change?
Physical (although strawberries, blueberries, ice, etc) are in a smaller pieces they are still the same thing.
If a material lights a bulb in a circuit, it is a:
Conductor
Can you see particles in matter?
No they are too small, but with a microscope scientist can explain how they move.
When liquid changes to a solid does the weight change?
No
Rust forming is a physical or chemical change?
Chemical change, it a new substance
An insulator does what?
Stops or slows electricity