Chemical Reactions and Types

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What do you call the number in front of each molecule (Red) ?

• Coefficient

• Subscript

• Reactant

• Products

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

Combustion reactions will always involve

• Oxygen and a solid

• Liquid nitrogen and heat

• Oxygen and heat/energy

• CO and H₂O

What reaction has the following general formula:

AB --> A + B

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-5

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

The Law of Conservation of Matter

• tells how many atoms of an element are contained in one molecule or formula unit.

• the starting materials in a chemical reaction

• the new substances that are formed in a chemical reaction

• A law stating that atoms are not created or destroyed during a chemical reaction.

Tags

NGSS.MS-PS1-5

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl₂ + H₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

The numbers needed to balance the equation are:

• 2, 7, 6, 4

• 2, 1, 3, 2

• 3, 1, 1, 3

• 2, 3, 1, 3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which number should go in the blank?
Mn + _ HNO₃ → Mn(NO₃)₂ + H₂

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-5