Checkpoint Review #1

Front

What is an element?

Back

An element is a substance that cannot be broken down into simpler substances and is made of only one kind of atom.

Front

What evidence indicates a chemical change has occurred?

Back

Evidence of a chemical change includes observable signs such as fizzing, color change, or the formation of a new substance.

Front

How many elements are in the compound CaCO3?

Back

There are 3 elements in CaCO3: Calcium (Ca), Carbon (C), and Oxygen (O).

Front

What is dilution in a scientific context?

Back

Dilution is the process of reducing the concentration of a solute in a solution, typically by adding more solvent.

Front

In a Kool-aid mixture, what is the solvent?

Back

The solvent in a Kool-aid mixture is water.

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 a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What is a compound?

Back

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