Amplify Chemical Reaction Test

Which of the following models best demonstrates a balanced chemical equation?

• F

• G

• H

• J

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are Chemical Reactions?

• It's when you mix substances.

• a process in which atoms rearrange to form new substances

• When something bubbles.

• letter and numbers showing the types and number of atoms

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT evidence that that a chemical reaction has occurred?

• produces light/heat

• production of a gas

• formation of a precipitate

• melting

Tags

NGSS.MS-PS1-2

A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?

• cutting a piece of paper

• folding a piece of paper

• tearing a piece of paper

• burning a piece of paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Digesting your food is an example of 

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When energy is transferred from the substances to the surroundings during a chemical reaction, what type of reaction is this?

• endothermic

• exothermic

• decomposition

• combustion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A company needs to create frying pans with a high melting point. To create this new substance, workers mixed together two substances in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances that melt at higher temperatures in the sealed container. (Nothing had escaped.)

Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances? (Remember, atoms on the reactant side of the equation, must be on the product side in the same amount but rearranged to form a new substance.)

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Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Tyler is working at a company that makes ink. To make a new kind of ink, Tyler mixed two liquid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.

After mixing, he found two solid substances in the sealed container. (Nothing had escaped.) Which of the diagrams (answers) shows the repeating groups of atoms that make up the ending substances? (Remember when a chemical reaction occurs the atoms rearrange to form a new substance.)

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Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Jackson mixed two samples together: a colorless gas with no smell and a colorless liquid that smells like bleach. He analyzed the results and found two ending substances. One of the ending substances was a green gas. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams (answers) shows the repeating groups of atoms that make up the samples Jackson mixed together?

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Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Alexa mixed two colorless substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the starting substances.

After mixing, she found two yellow substances in the sealed container. (Nothing escaped.) Which of the repeating groups of atoms below make up the ending substances? (Remember during a chemical reaction atoms rearrange to form a new substance.)

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Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5