Chemical Formulas and Counting Atoms

How many different ELEMENTS are in N₂O ?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

________ are the starting substances in a chemical equation.

• Reactants

• Producer

• Reaction

• Products

Tags

NGSS.MS-PS1-1

Lists the "ingredients" of a molecule or compound-- the chemical symbols and numbers of atoms present.

• chemical symbol

• coefficient

• subscript

• chemical formula

Tags

NGSS.MS-PS1-1

How many TOTAL atoms are there in H₂O (water)?

• 1

• 2

• 3

• more than 3

Tags

NGSS.MS-PS1-1

How many total atoms are in the compound C₂H₈O ?

• 11

• 2

• 8

• 1

Tags

NGSS.MS-PS1-1

Number of H in 3(NH₄)₂CrO₄

• 4

• 2

• 8

• 24

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

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