2024 Physical Science Midterm

Front

A measurement must include both a number and a(an) ____________________.

Back

unit

Front

A substance that is made up of only one kind of atom is a(an) ____________________.

Back

element

Front

Measuring ____________________ can be used to test the purity of some substances.

Back

density

Front

If the temperature and volume in a closed container of gas remain constant, and the number of particles of gas is increased, the gas pressure will ____________________.

Back

increase

Front

Which of the following is a chemical change? Ice melting, water breaking down into hydrogen and oxygen, water boiling, slicing a tomato? ____________________.

Back

water breaking down into hydrogen and oxygen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the definition of an element? ____________________.

Back

A substance that cannot be broken down into simpler substances by chemical means.

Front

What is the definition of a compound? ____________________.

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the definition of a mixture? ____________________.

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the boiling point of water at sea level? ____________________.

Back

100 degrees Celsius (212 degrees Fahrenheit).

Front

What happens to gas pressure when the volume of the container decreases? ____________________.

Back

The gas pressure increases.

Tags

NGSS.MS-PS1-4