1.2 Matter: Atoms, Elements, & Molecules

Anything that has mass and takes up space

• atoms
• elements
• molecules
• matter

the smallest particle of matter

• atom
• element
• molecule
• compound

made up of one or more of the same type of atom

• atom
• element
• molecule
• compound

made up of two or more atoms chemically combined

• atom
• element
• molecule
• compound

How many atoms/elements in K?

• 1
• 2
• 3
• 0

Is K an element or a molecule?

• element

• molecule

How many atoms/elements are in NO₂?

• 1
• 2
• 3
• 4

Is NO₂ an element or a molecule?

• element

• molecule

How many atoms/elements are in CaCO₃?

• 3
• 4
• 5
• 6

Is CaCO₃ an element or a molecule?

• element

• molecule