Elements, Compounds, Mixtures

Front

What is the total number of atoms in K₂SO₄?

Back

7

Tags

NGSS.MS-PS1-1

Front

What is the chemical symbol for Iron?

Back

Fe

Front

What is a pure substance?

Back

A pure substance is an element or a compound.

Front

Which of the following is an element: Sugar, Salt, Water, Oxygen?

Back

Oxygen

Front

What is NaHCO₃ an example of?

Back

A compound.

Tags

NGSS.MS-PS1-1

Front

Define an element.

Back

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

Front

Define a compound.

Back

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

Tags

NGSS.MS-PS1-1

Front

What is a mixture?

Back

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

Front

How many elements are in the compound H₂O?

Back

2 (Hydrogen and Oxygen).

Tags

NGSS.MS-PS1-1

Front

What is the chemical formula for table salt?

Back

NaCl.