Chemistry Review 2024

Which of the following is an example of a simple molecule?

• Graphite

• Sodium chloride

• Ammonia

• Diamond

Tags

NGSS.MS-PS1-1

Which of the following substances is composed of different types of atoms?

• Diamond

• Gold

• Graphite

• Sodium chloride

Tags

NGSS.MS-PS1-1

In the periodic table, elements are arranged in order of increasing:

• Atomic mass

• Atomic number

• Number of neutrons

• Electronegativity

What is the atomic number of an element?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The total number of protons and neutrons in the nucleus

• The total number of protons and electrons in an atom

What is the charge of a neutron?

• +1

• 0

• -1

• It depends on the atom

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

Put these in order from least dense to most dense

• Solid

  Liquid

  Gas

• Liquid

  Gas

  Solid

• Gas

  Liquid

  Solid

• Solid

  gas

  Liquid

The change of state from a gas to a liquid, caused by cooling is called:

• Thermal Conductor

• Thermal Insulator

• Condensation

• Evaporation

Tags

NGSS.MS-PS1-4

The change of state from a liquid to a gas, caused by heating is called:

• Evaporation

• Condensation

• Thermal Insulator

• Thermal Conductor

Tags

NGSS.MS-PS1-4

Conservation of Matter means

• The change of state from liquid to a gas

• The change of state from a gas to a liquid

• Even when matter changes state, the total amount of matter stays the same.

• A change in state of matter in which the material is still the same.

Tags

NGSS.MS-PS1-5