Elements, Compounds, Mixtures, Molecules

Elements are made of 

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

All matter is made of 

• energy 
• atoms 
• electrons 
• compounds 

Which subatomic particles are much smaller than the others and have a negative charge?

• protons

• neutrons

• electrons

H₂O is a compound molecule.

• TRUE

• FALSE

How many Hydrogen atoms are in Water (H2O)

• 1
• 2
• 3
• 4

Which of the following is NOT a compound?

• HCl

• Cl₂

• NaCl

• CO₂

Is salt (NaCI) a compound or an element?

• Compound

• element

Two or more physically combined substances form

• a compound.

• an acid.

• an element.

• a mixture.

What is an example of a mixture?

• Table salt

• Water

• Oxygen

• Air

A molecule is made of ________ atoms/elements.

• big

• similar

• different