Assessment 1 Review - Counting Atoms Basics

Front

What is the chemical formula for water?

Back

H₂O

Front

How many Hydrogen atoms are in one molecule of water (H₂O)?

Back

2

Front

How many Oxygen atoms are in one molecule of water (H₂O)?

Back

1

Front

What is the chemical formula for Magnesium Chloride?

Back

MgCl₂

Front

How many Magnesium atoms are in 10 molecules of Magnesium Chloride (10MgCl₂)?

Back

10

Front

What is the chemical formula for glucose?

Back

C₆H₁₂O₆

Front

How many different elements are in the formula C₆H₁₂O₆?

Back

3 (Carbon, Hydrogen, Oxygen)

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in one molecule.

Front

If a compound has the formula NaCl, how many Sodium (Na) and Chlorine (Cl) atoms are present?

Back

1 Sodium atom and 1 Chlorine atom.

Front

What is the total number of atoms in one molecule of H₂O?

Back

3 (2 Hydrogen + 1 Oxygen)