Balanced or Not? Chemical Reactions

In this image, the information in red is called the_______.

• Products
• Reactants
• Chemical Subscript
• Ingredients

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In this image, the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript
• Final chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The small numbers in a chemical formula:

(the BLUE numbers)

• Subscripts

• Coefficients

• Numbers

• Molecules

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• NO!

Tags

NGSS.MS-PS1-5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

How many Hydrogen are in H₂O?

• 1

• 2

• 3

• Not enough information.

Tags

NGSS.MS-PS1-1

How many Oxygen in 3CO₂?

• 3

• 2

• 6

• Not enough information.

Tags

NGSS.MS-PS1-1

Is this equation balanced?

• Yes, everything appears the same amount on each side.

• No, there are too many oxygen on the left side.

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• Yes, everything appears the same amount on each side.

• No, there are too many hydrogen on the left side.

• No, there are too many oxygen on the left side.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• Yes, everything appears the same amount on each side.

• No, there are too many hydrogen on the left side.

• No, there are too many oxygen on the left side.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5