Chemical Interactions

Check all that apply: What is the best evidence that a chemical reaction has taken place?

• fizzing and bubbling-release of a gas

• there is no color change

• temperature change

• can see the substance settling in the bottom of the liquid

• color change

Tags

NGSS.MS-PS1-2

When we tested the reactions of our mystery white substances, to get the most accurate reaction results we should always

• use different amounts of substance per trial

• use different amounts of liquid per trial

• use the same amount of substance and liquid per trial

• measuring anything is overrated, use however much you'd like

How many oxygen atoms do you see?

Tags

NGSS.MS-PS1-1

What always occurs during a chemical reaction?

• bubbles

• color change

• a new substance is formed

• one substance melts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Green bananas turning yellow on their own as they ripen.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

What happens to the atoms in substances when a chemical reaction occurs?

• some of the atoms are destroyed

• atoms rearrange to form new substances

• new atoms are created

• atoms melt

Tags

NGSS.MS-PS1-5

What is a chemical reaction?

• A process in which starting substances change into different substances.

• a form of matter with a unique composition

• an interaction between two substances in which one breaks apart and intermingles with the other

• the result of a change of energy in the particles of a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is not an example of a chemical reaction?

• iron rusting

• fireworks

• baking soda and citric acid together forms carbon dioxide gas

• melting ice

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a compound?

• Cobalt (Co)

• Carbon dioxide (CO₂)

• Magnesium (Mg)

• Boron (B)

Tags

NGSS.MS-PS1-1

A chemical reaction is

• A form of matter with a unique composition.

• An interaction between 2 substances in which one breaks apart and intermingles with the other.

• A process in which starting substances (reactants) change into different substances (products)

• The result of a change of energy in the particles in a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5