Chemical Interactions

What happens in a chemical reaction?

• Atoms from the reactants rearrange and form new substances

• Atoms from the products rearrange and form new reactants

• New atoms appear in the reactants

• Atoms from the reactants dissappear

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A scientist prepared a closed container for a chemical reaction. She poured two liquids into the bottle and quickly closed the bottle with the balloon stopper. The mixture bubbled and the balloon began to inflate. Explain why the balloon inflated.

• New substances formed particles that are bigger than the ones before.

• The liquids reacted together and created more matter

• A new gas was created and the gas took up more space

• The scientist did not seal the system fast enough and more air got in.

Tags

NGSS.MS-PS1-2

Look at the image: The different-shaded circles represent different kinds of atoms. When circles are touching, they indicate that those atoms make up one molecule. Which of them represents a possible chemical reaction?

• Reaction A

• Reaction B

• Reaction C

• Reaction D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the chemical equation for the molecule in the image.

• O₃₄

• ZnClOH

• ZCOH

• C₈H₁₆OZN

Tags

NGSS.MS-PS1-1

How many atoms are in this formula in the picture?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many elements are in the formula in the image?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What is the Chemical Formula for the image?

• ZNCOH

• ZnClOH

• C₂H₆O

• C₁₂H₆O₄

Tags

NGSS.MS-PS1-1

How many atoms are in the fomula in the image?

• 2

• 4

• 8

• 9

Tags

NGSS.MS-PS1-1

How many elements are in the formula in the image?

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS1-1

Consider substances found occuring naturally in the environment and synthetic substances created by humans in laboratories and select ALL that occur in both places.

• Made of Atoms

• Can be toxic

• Can be a product of a chemical reaction

• Is made of matter

• Is made of elements

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-3