Week 23 Chemical Reactions and Energy

Chemical energy is the energy that bonds atoms together to form a (a)   together to form a substance.

• molecule
• compound
• element
• mixture

Tags

NGSS.MS-PS1-1

Chemical energy is released when a chemical reaction occurs.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction occurs when Blank between atoms or molecules are formed or broken.

(a)  

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

All chemical reactions are accompanied by energy changes and are classified as (a)   or exothermic.

• endothermic
• exothermic
• neutral
• spontaneous

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

An endothermic reaction is any chemical reaction that absorbs heat from its environment in order for the reaction to occur, resulting in a feeling of (a)   .

• cold
• hot
• warm
• neutral

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

An exothermic reaction is any chemical reaction that releases energy into the environment in the form of (a)   , light, or sound.

• heat
• light
• sound
• energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Two examples of chemical reactions in nature are (a)   and digestion.

• photosynthesis
• respiration
• fermentation
• oxidation

Tags

NGSS.MS-LS1-6

Photosynthesis is the process of a plant making its own food through an (a)   chemical reaction in which energy is required from the sun to convert carbon and water into glucose.

• endo
• exo
• neutral
• spontaneous

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Blank is the process of an organism breaking down food to release energy as an exothermic reaction.

• Combustion

• Photosynthesis
• Fermentation
• Digestion

Tags

NGSS.MS-LS1-7

Fossil Fuels are hydrocarbons formed from the remains of dead plants and animals that have been buried under pressure.

• True

• False

Tags

NGSS.MS-ESS3-1