Element, Compound, Mixture Review

Elements are made of 

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

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

Tags

NGSS.MS-PS1-1

H₂O is a compound molecule.

• TRUE

• FALSE

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms are in Water (H2O)

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Which of the following is NOT a compound?

• HCl

• Cl₂

• NaCl

• CO₂

Tags

NGSS.MS-PS1-1

Both elements and compounds are pure substances.

• True

• False

Which statement about atoms is true?

• Atoms combine to make all the substances on Earth.

• Atoms are made up of smaller particles called molecules.

• Atoms come in different sizes, but most are visible using a simple hand lens.

• Atoms combine to make larger subatomic particles.

Tags

NGSS.MS-PS1-1

What is the basic unit of matter and is the smallest particle of an element?

• Atoms
• Elements
• Compounds
• Molecules

How many carbon atoms are there in a methane molecule? 

• 0
• 1
• 4
• 5

Tags

NGSS.MS-PS1-1

What is the total number of atoms in an ammonia (NH₃) molecule?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1