Science TEST (Unit 3/Lessons 4-5)

A student bent a glow stick, and it started producing light. Is this evidence a new substance was created

• yes

• no

• we can't make new substances

Which observation is evidence of a chemical change?

• Gas released

• Turning form a liquid to a gas

• freezing

• dissolving

A characteristic that can OBSERVED or MEASURED without changing the substance.

• Chemical Change

• Rust

• Physical Change

• Brittleness

When a substance combines with another substance and CHANGES into a NEW SUBSTANCE.

• Chemical Change

• Rust

• Physical Change

• Brittleness

What type of change is it if two substances form a new substance?

• no change

• chemical change

• physical change

• hypothetical change

A very tiny thing, sometimes too small to be seen

• particle

• paper

• coin

• chair

Step of the Scientific Method where you try and solve your problem?

• Experiment

• State the Problem

• Make a Hypothesis

• Get & Use Results

What is a model?

• a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with

• A unique picture of a particle.

• A large scale experiment.

• A fun puzzle

Models are used to better understand a complex thing.

• True

• False

What kind of change is breaking a window?

• 
•