Counting Atoms - Reassessment Practice

Front

What is a pure substance that cannot be broken down into simpler substances?

Back

Element

Front

What is the correct formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

How many atoms of Oxygen are in Fe(NO₃)₃?

Back

9

Front

How many atoms are there TOTAL in H₂SO₄?

Back

7

Front

How many Chlorine atoms are in MgCl₂?

Back

2

Front

What is a compound?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the chemical formula for water?

Back

H₂O