Exploring Energy and Chemical Bonds

Explain how energy is transferred in a coal-fired power plant.

• Energy is transferred from chemical to thermal to mechanical to electrical.

• Energy is transferred from electrical to mechanical to thermal to chemical.

• Energy is transferred from mechanical to thermal to chemical to electrical.

• Energy is transferred from thermal to chemical to mechanical to electrical.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which of the following is a property of ionic compounds?

• They have low melting points.

• They conduct electricity when dissolved in water.

• They are malleable.

• They are good conductors of electricity in solid form.

• Ionic bonding

• Metallic bonding

• Covalent bonding

• Hydrogen bonding

Tags

NGSS.HS-PS1-1

Describe the role of photosynthesis in the carbon cycle.

• Photosynthesis releases carbon dioxide into the atmosphere.

• Photosynthesis converts carbon dioxide into organic matter.

• Photosynthesis breaks down organic matter into carbon dioxide.

• Photosynthesis stores carbon dioxide in fossil fuels.

Tags

NGSS.HS-LS2-5

Which of the following is an alkene?

• Ethane

• Propene

• Butane

• Methane

What is the main difference between alkanes and alkenes?

• Alkanes have a carbon-carbon double bond, while alkenes do not.

• Alkenes have a carbon-carbon double bond, while alkanes do not.

• Alkanes are unsaturated, while alkenes are saturated.

• Alkenes are saturated, while alkanes are unsaturated.

Which of the following processes is part of the carbon cycle?

• Combustion of fossil fuels

• Formation of metallic bonds

• Dissolution of salts

• Electrolysis of water

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

What type of energy store is associated with a stretched rubber band?

• Chemical energy

• Kinetic energy

• Elastic potential energy

• Gravitational potential energy

Explain how metallic bonding contributes to the properties of metals.

• Metallic bonding allows metals to be brittle.

• Metallic bonding allows metals to conduct electricity.

• Metallic bonding prevents metals from conducting heat.

• Metallic bonding makes metals soluble in water.

Which of the following is a fossil fuel?

• Solar energy

• Wind energy

• Coal

• Biomass