Unit 7 True/False Practice

All detergents are prepared from fats.

• True
• False

Tags

NGSS.MS-PS1-3

A half life is the time it takes for half the atoms in a radioactive substance to take the first decay step.

• True
• False

Tags

NGSS.HS-PS1-8

Eutrophication is when solar energy is trapped in the atmosphere by carbon dioxide, which causes a rise in the temperature

• True
• False

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

Ozone depletion, a thinning of the ozone layer of gas in the upper atmosphere, is caused by the presence of chlorine in the atmosphere.

• True
• False

Detergents work by lowering water's surface tension

• True
• False

As alkanes and alkenes get longer, they change state from liquid to gas

• True
• False

Natural gas is a mixture of alkanes that can be refined, while petroleum consists mainly of methane

• True
• False

Alkynes are organic compounds with a single carbon-carbon bond

• True
• False

Esters are organic compounds that play a role in the smells of fruits and flowers.

• True
• False

The five main products of primary distillation are refinery gas, gasoline, kerosene, diesel oil and residue

• True
• False