CHEM Unit 2 Lessons 5-7 Review

What is the charge of a proton?

• Neutral

• Positive

• Negative

• No charge

Where are electrons found in an atom?

• Nucleus

• Proton cloud

• Electron cloud

• Neutron cloud

What happens when the number of protons in an atom changes?

• The atom becomes an ion

• The atom changes its charge

• The atom changes its element

• The atom becomes neutral

What did J.J. Thomson use to discover the existence of electrons?

• Gold foil

• Cathode ray tubes

• Alpha particles

• Neutron beams

What causes the top of a cloud to be positively charged?

• Collisions between ice crystals and water molecules

• Movement of electrons

• Warm air rising

• Static electricity

Tags

NGSS.MS-PS2-5

What is the movement of charge from one place to another called?

• Static

• Electricity

• Magnetism

• Conduction

What happens when objects in contact produce static?

• Electrons are added to both objects

• Electrons are removed from one object

• Protons are added to both objects

• Neutrons are removed from one object

What happens to thunderclouds due to warm, moist air?

• They shrink

• They grow very tall

• They become neutral

• They lose electrons

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What causes a massive buildup of electrons in clouds?

• Everyday static interactions

• Warm air rising

• Collisions with protons

• Movement of neutrons

Tags

NGSS.MS-PS2-5

What is electricity?

• The movement of protons

• The movement of neutrons

• The movement of charges (i.e., electrons)

• The movement of atoms

Tags

NGSS.MS-PS3-5