Chapter 4 "Test"

What is the molar mass of sodium (Na)?

• 11 g/mol

• 23 g/mol

• 1 g/mol

• 3 g/mol

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

What is the molar mass of table salt (NaCl)?

• 805 g/mol

• 35 g/mol

• 23 g/mol

• 58 g/mol

What is the molar mass of CO₂?

• 22

• 16

• 32

• 44

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

What is the mass of one mole of Helium?

• 4 g

• 2 g

• 8 g

• There is no way to know

All matter is made of what...

• energy

• atoms

• electrons

• compounds

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

The central region of an atom where its neutrons and protons are is its

• nucleus

• electron cloud

• core

• center

Particles in an atom that are neutral and have no charge are

• negatrons

• electrons

• neutrons

• protons