Physical Science Mid-Term Review Part A

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances that are not uniformly distributed, meaning the different components can be seen and separated. Example: A bowl of Skittles candy.

Front

What is a hypothesis?

Back

A hypothesis is a possible explanation for an observation that can be tested through experiments or further investigation.

Tags

NGSS.MS-PS3-4

Front

What particle in an atom has a positive charge?

Back

The proton is the particle in an atom that has a positive charge.

Front

What particles are located in an atom's nucleus?

Back

The nucleus of an atom contains protons and neutrons.

Front

What is an observation in scientific terms?

Back

An observation is using one or more of your senses to gain information about the world around you.

Tags

NGSS.MS-PS1-2

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-5

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in a fixed ratio.

Tags

NGSS.MS-PS1-1