Counting Atoms and Chemical Formulas

Number of H in 3(NH₄)₂CrO₄

• 4

• 2

• 8

• 24

Tags

NGSS.MS-PS1-1

The blue numbers in the image below are called ___________.

• compounds

• coefficients

• subscripts

• chemical formulas

Number of C's in 2Na₂CO₃

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

How many Elements are in the compound C₂H₈O ?

• 2

• 1

• 3

• 0

Tags

NGSS.MS-PS1-1

• Iron, Oxygen

• Francium, Europium, Oxygen

• Ferrium, Oxygen

• Berylium, Oxygen

Tags

NGSS.MS-PS1-1

Chemical formulas are used to represent _________________.

• reactions

• substances

• processes

• none of the above

Tags

NGSS.MS-PS1-1

The large numbers before a chemical formula that are used as multipliers are known as __________________.

• element symbols

• exponents

• coefficients

• subscripts

A ___________________ uses chemical formulas, plus signs, and an arrow to represent a chemical reaction

• chemical formula

• chemical equation

• element symbol

• inventory

What is the correct "inventory" for KClO₃

• K = 1 Cl = 3 O = 3

• K = 3 Cl = 3 O = 3

• K = 1 Cl = 1 O = 3

• K = 1 C = 1 l = 1 O = 3

Tags

NGSS.MS-PS1-1

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1