Elements, Molecules and Compounds

______ is an ELEMENT since it is only made up of one type of atom.

• Water
• Air
• Gold
• Salt

Tags

NGSS.MS-PS1-1

A molecule is made up of ____ or more atoms.

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

The number of atoms it would take to make a molecule of water.

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

Tags

NGSS.MS-PS1-1

What is a compound?

• Two different elements bonded together.

• Two of the same elements bonded together.

• A mixture of different substances.

• Two substances stuck together with glue.

Tags

NGSS.MS-PS1-1

Which of the following is a chemical symbol?

• H₂O

• O

• NaCl

• FeO

What is the chemical symbol for the element mercury?

• Hg

• Merc

• MeC

• MY

How would O2 be qualified. Check all answers that apply.

• Atom

• Molecule

• Compound

Tags

NGSS.MS-PS1-1

Elements are made of 

• many types of atoms 
• the periodic table
• one type of atom 
• molecules 

Tags

NGSS.MS-PS1-1

Atomicity is ......

• the number of atoms present in an element.

• the number of atoms present in a molecule.

• atomic mass

• none of the above