Chemical Reactions

How many atoms in C₂H₆?

• 1

• 5

• 29

• 8

Tags

NGSS.MS-PS1-1

Simplest form of an element. 

Building blocks of all matter.

• Compound

• Atom

• Matter

• Elephant

Tags

NGSS.MS-PS1-1

Pure substances that make up ALL matter in the universe.

• Elements

• Atom

• Gum

• Molecules

Tags

NGSS.MS-PS1-1

How many atoms in K₂SO₃?

• 0

• 1,000

• 10

• 6

Tags

NGSS.MS-PS1-1

How many atoms in 3H₂SO₄?

• 5

• 21

• 1,000

• 12

Tags

NGSS.MS-PS1-1

The coefficient is the ___ number and shows how many _____ there are needed in a chemical reaction.

• ugly, bugs

• Little, Molecules

• Big, atoms

• Big, Molecules

Tags

NGSS.MS-PS1-5

What happens to the temperature during an EXOTHERMIC Reaction?

• The temperature gets angry.

• It goes up. Heat is released.

• It goes down. Heat is absorbed

• Absolutely nothing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the temperature during an ENDOTHERMIC Reaction?

• It goes down. Heat is absorbed

• The temperature is happy

• x + y = z

• Reactions that have never been discussed.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does the Law of Conservation of Mass state about atoms?

• Don't run a red light

• Atoms can be angry if they can't make friends

• Atoms are neither created nor destroyed. Just changed into something new. 

  
  

• Atoms can be destroyed and created during a chemical reaction.

Tags

NGSS.MS-PS1-5

The subscript is the ___ number and shows how many _____ there are in a molecule.

• Small, Atoms

• Small, elements

• Pretty, flowers

• Big, hairs

Tags

NGSS.MS-PS1-1