Fast and Curious Chemistry

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or atoms of that substance are involved in the reaction.

Front

Why is saltwater considered a mixture?

Back

Saltwater is considered a mixture because it is composed of two or more substances (salt and water) that retain their original properties.

Front

What is a compound?

Back

A compound is a substance made up of two or more elements that are chemically combined.

Front

What happens when a substance undergoes a chemical change?

Back

When a substance undergoes a chemical change, it transforms into a new substance with different properties.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity, such as state of matter.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed when two or more elements chemically combine.

Front

What is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.

Front

What is the definition of a chemical property?

Back

A chemical property is a characteristic of a substance that describes its ability to undergo a specific chemical change.

Front

What is the state of matter?

Back

The state of matter refers to the distinct forms that different phases of matter take on, primarily solid, liquid, gas, and plasma.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.