Chemistry Final Review

The branch of chemistry which studies substances containing carbon is

• organic chemistry.

• inorganic chemistry.

• physical chemistry.

• analytical chemistry.

Matter includes all of the following except

• air.

• smoke.

• light.

• water vapor.

The substances that are chemically bound together are

• the gases in the air.

• dust particles in the air.

• the elements that compose water.

• substances in lemonade.

Tags

NGSS.MS-PS1-1

Which one of the following statements about hypothesis is FALSE?

• A hypothesis should be created when the outcome for its test is known.

• A hypothesis is a possible explanation for a natural phenomenon.

• A hypothesis is an educated guess as to why something happens.

• A hypothesis must be testable in a way that is replicable by others.

A student was cleaning out the laboratory refrigerator and stumbled across an unlabeled vial of a colorless liquid. In order to identify it, the student measured several of its properties. Which of the properties is an intensive property?

• the substance forms a white solid when added to vinegar

• the density of the substance is 0.742 g/mL

• the substance weighs 50.00 grams

• its volume is 67.0 mL

After distilling a sample, you find that you have two distinct components. What can be said about the original sample?

• it is a compound

• it is an element

• it is a pure substance

• it is a mixture

What is the relationship between wavelength and frequency of all waves on the electromagnetic spectrum?

• Wavelength and frequency are directly related.

• Wavelength and frequency are inversely related.

• Wavelength and frequency are unrelated.

• Wavelength and frequency are equal.

Tags

NGSS.HS-PS4-1

The optical portion of the electromagnetic spectrum above represents visible light (red, orange, yellow, green, blue, indigo, and violet). Which statement is correct about the optical portion of the spectrum?

• The photons of red light have more energy than photons of violet light.

• The photons of red light have equal energy as photons of violet light.

• The photons of red light have less energy than photons of violet light.

• The photons of violet light have less energy than photons of red light.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

What atom matches this electron configuration?

1s² 2s² 2p⁶ 3s²

• Magnesium

• Neon

• Aluminum

• Potassium

Tags

NGSS.HS-PS1-1

Which is the electron configuration for an oxygen atom?

• 1s²2s²2p⁶3s²3p⁶4s²

• 1s²2s²2p⁶

• 1s²2s²2p⁴

• 1s²2s²2p⁶3s²3p⁶

Tags

NGSS.HS-PS1-1