Decoding Chemical Formulas and Compounds

What is a chemical formula?

• A technique to measure the volume of a substance.

• A method to calculate the weight of a compound.

• A way to express the proportion of atoms in a compound using symbols and numbers.

• A process to determine the color of a chemical.

How many hydrogen atoms are in a water molecule?

• One

• Four

• Two

• Three

Tags

NGSS.MS-PS1-1

What is the chemical formula for glucose?

• C6H12O6

• H2O

• C2H5OH

• NH3

Tags

NGSS.HS-LS1-6

In the chemical formula CH4, what does the subscript '4' indicate?

• Four hydrogen atoms

• Four nitrogen atoms

• Four carbon atoms

• Four oxygen atoms

Tags

NGSS.MS-PS1-1

If a chemical symbol has no subscript, what is the understood number of atoms?

• Three

• Two

• One

• Zero

Which element is typically listed first in a chemical formula?

• The one with the highest electronegativity

• The one with the lowest electronegativity

• The one with the highest atomic number

• The one with the lowest atomic number

In the compound NB2O3, how many oxygen atoms are present?

• Two

• Three

• Four

• Five

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in the compound with the formula (NH4)2S?

• Sixteen

• Twelve

• Eight

• Four

Tags

NGSS.MS-PS1-1

In the compound Ba(OH)2, how many oxygen atoms are there?

• Four

• Two

• One

• Three

Tags

NGSS.MS-PS1-1

How many total atoms are in the compound Zn(C8H30O4)2?

• 58

• 62

• 54

• 66

Tags

NGSS.MS-PS1-1