Chemical Reactions

The substances that are present before a reaction are the...

• reactants
• products
• both of these
• neither of these

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

___________________ are the elements or compounds that are formed in a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products

Tags

NGSS.HS-PS1-6

_______________ can speed up the rate of reactions and/or lower the amount of energy needed for
the reaction to take place.

• Carbohydrates
• Fuel source
• Chemical
• Catalyst

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Element or compound?
H₂O

• element
• compound

Compounds break down into simpler substances in this type of reaction.....

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

_{Name this reaction, CO2} + H₂O --> H₂CO₃ 

• Decomposition
• Single Replacement
• Synthesis
• Combustion

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Is melting an object technically known as a chemical reaction? 

• maybe?
• Yes
• No

What is decomposition?

• putting substances together
• breaking substances apart
• element replacing another element in a compoud
• burning of a subtance