Chemistry

Front

What is a physical change?

Back

A physical change is a change that alters the appearance of a substance but does not change its composition.

Front

What is a chemical change?

Back

A chemical change is a change that alters the composition of a substance, resulting in the formation of new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are the vertical columns on the Periodic Table called?

Back

The vertical columns on the Periodic Table are referred to as Groups or Families.

Front

What are the horizontal rows on the Periodic Table called?

Back

The horizontal rows on the Periodic Table are referred to as Periods or Rows.

Front

What is an example of a chemical property?

Back

An example of a chemical property is flammability, such as gasoline being flammable.

Front

What is the chemical formula for silicon?

Back

The chemical formula for silicon is Si.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically bond together.

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 the significance of the Periodic Table?

Back

The Periodic Table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2