7th grade Science REVIEW 1st Semester

Front

What explains the difference between graphite and diamond?

Back

The arrangement of the atoms of each one.

Front

How do you calculate average speed?

Back

Average speed = Total distance / Total time.

Front

What is water known as in scientific terms?

Back

Water is known as the universal solvent.

Front

What does the law of conservation of mass state?

Back

The total mass of reactants is equal to the total mass of products in a chemical reaction.

Front

What is a chemical property of a substance?

Back

The ability to react with oxygen to form rust.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the definition of a solvent?

Back

A solvent is a substance that dissolves a solute, resulting in a solution.

Front

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

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is an example of a physical property?

Back

Density, color, and melting point are examples of physical properties.

Front

What is the significance of the atomic arrangement in materials?

Back

The atomic arrangement determines the physical and chemical properties of the material.