Chemical Reactions and Counting Atoms

What are the chemicals a reaction BEGINS with called?

• products

• reactants

• mixables

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The amount of matter that you have BEFORE a reaction is the same as the amount AFTER. This is called the "LAW OF....."

• Heat

• Momentum

• Conservation of Matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The term that tells you how many molecules are in a reaction? (It is the number in front of each symbol)

• superscript

• subscript

• coefficient

The chemicals made AFTER a chemical reaction are called:

• interactants

• products

• reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is the CORRECT number of atoms?

• calcium= 2 atoms

  oxygen = 1 atom

  hydrogen= 1 atom

• calcium = 1 atom

  Oxygen= 2 atoms

  hydrogen = 2 atoms

• copper = 1 atom

  oxygen = 1 atom

  hydrogen= 2 atoms

Tags

NGSS.MS-PS1-1

Term that tells you how many atoms are in each molecule? (Found underneath the atomic symbol)

• superscript

• subscript

• conscript

Tags

NGSS.MS-PS1-1

How many atoms are in the molecule?

Tags

NGSS.MS-PS1-1

How many atoms are in the molecule?

Tags

NGSS.MS-PS1-1

How many atoms in the molecule?

Tags

NGSS.MS-PS1-1

How many atoms are in the molecule?

Tags

NGSS.MS-PS1-1