Quarter 1 Physical Science (w/IEPs)

Front

How many kilograms is 250 grams of flour? (1kg=1000g)

Back

0.25 kg

Front

What is the nucleus of an atom?

Back

The center of an atom containing protons and neutrons.

Front

What is the base unit of length in the metric system?

Back

Meter

Front

What is a hypothesis?

Back

A statement that can be tested through experimentation.

Front

What is the purpose of safety goggles in a laboratory?

Back

To protect the eyes from chemical splashes and debris.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its composition.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.