Unit 1 Matter Mid-Unit Check (P)

__________ are the building blocks of matter

I am 2 or more elements chemically bonded.

• atom
• molecule
• compound
• mixture

Which 2 kinds of particles make up the nucleus of an atom?

• electrons and neutrons
• electrons and nuclei
• protons and neutrons
• protons and kryptons

Which particle carries a negative charge?

• protons
• neutrons
• electrons

What kind of charge do protons have?

• positive
• negative
• neutral

Neutrons have a ________ charge.

• positive
• negative
• neutral

What is the mass number of this atom?

• 1
• 3
• 4
• 7

Highly reactive

• Alkali metal

• Noble gases

• Rare earth metals

• Neon

------ are poor conductors of heat and electricity

• Transition metals

• All metals

• Non metals

• Copper

The electrons in the outer most energy level of an atom is also known as

• Active electrons

• Inert electrons

• Valence electrons

• None of the above