Science Final Study Guide

What is anything that has mass and takes up space?

• Volume
• Matter
• Energy
• Density

What is the SI unit to measure volume?

• liters (L)
• cubic liters (m^3)

• grams (g)
• square meters (m^2)

What is the formula for density?

• Density = Volume / Mass
• Density = Mass * Volume
• Density = Weight / Volume
• Density = Mass / Volume

Who discovered that the atom had a nucleus?

• Ernest Rutherford
• Niels Bohr
• Isaac Newton
• Marie Curie

Energy levels of atoms are occupied by what?

• protons
• neutrons
• electrons
• photons

Who discovered the electrons?

• Marie Curie
• Albert Einstein
• Isaac Newton
• J.J. Thomson

What is the mass number of an atom that contains 7 protons, 7 neutrons, and 7 electrons?

• 14

• 21

• 28

What type of radioactive decay decreases the atomic number by 2?

• Neutron decay
• Beta decay
• Alpha decay
• Gamma decay

What is the name of an atoms of an element with different amounts of neutrons?

• Isotopes
• Molecules
• Compounds
• Elements

Carbon has an atomic number of 6. If carbon's mass is 14, how many neutrons are there?

• 8
• 12
• 10
• 4