8th Grade Science BM 1 Review

Front

What is an opinion about the element copper?

Back

An opinion is a personal belief or judgment. For example, 'Copper mixed with silver is expensive.' is an opinion.

Front

What does ductile mean?

Back

Ductile means a material can be made into wire.

Front

Why do we say a car accelerates when it goes around a corner at 20 mph?

Back

The car is accelerating because it's changing direction.

Front

What happens to a person's motion when they take a break while running at a constant speed?

Back

The graph of their motion would show a flat line during the break, indicating no movement.

Front

What is the chemical formula C3H5(NO3)3?

Back

It indicates that there are 3 Carbon (C), 5 Hydrogen (H), 3 Nitrogen (N), and 9 Oxygen (O) atoms.

Front

What is a conductor?

Back

A conductor is a material that allows electricity to flow through it easily.

Front

What is the difference between speed and velocity?

Back

Speed is the distance traveled per unit of time, while velocity includes direction.

Front

What does it mean for a material to be malleable?

Back

Malleable means a material can be hammered or pressed into shapes without breaking.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object.