Count the atoms, elements and molecules

The ________________ which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound.

• metals

• element symbols

• metalloids

• nonmetals

How many elements are in this chemical formula?

NaOH

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms are in the formula?

NaOH

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS1-1

How many elements are in this formula?

HNO₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many elements are in this formula?

Li₂O

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many elements and atoms are there in this formula?

CaClO₃

• 1, 5

• 2, 4

• 3, 5

• 4, 4

Tags

NGSS.MS-PS1-1

How many elements are there in this formula?

H₂COCH₂

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS1-1

How many atoms are there in this formula?

H₂COCH₂

• 5

• 4

• 6

• 7

Tags

NGSS.MS-PS1-1

All matter is made of _________.

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

A pure substance that cannot be broken down chemically into simpler substances

• Precipitate

• Element

• Compound

• Pure Substance