Chemical Interactions

What is a chemical equation?

• The way scientist document a chemical reaction using letters and symbols
• the way a math teacher talks about chemicals
• a mathematical way to do chemistry

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many Oxygens are in this molecule? 
(OH)₂

• 4
• 1
• 2
• 3

Tags

NGSS.MS-PS1-1

What are the smaller numbers that you CANNOT change in a chemical equation? 

• Coefficient
• Products
• Reactants
• Subscript

Tags

NGSS.MS-PS1-5

What are the larger numbers that you Go in front of elements or compounds in a chemical equation?

• Coefficient

• Products

• Reactants

• Subscripts

Na + O₂ -----> Na₂O

Type of reaction?

• Synthesis

• Decomposition

• Single Replacement

• Double replacement

What type of reaction is this?

2H₂O₂ ----> 2H₂O + O₂

• Synthesis

• Decomposition

• Single Replacement

• Combustion

What law governs the balancing of chemical equations? 

• Law of Energy
• Law of Conservation of Matter/Mass
• Law of Gravity
• Law of Matter Movement 

Tags

NGSS.MS-PS1-5

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction. 

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

What is the arrow in a chemical equation...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5