QUIZ - SS2 Day 3

What is the purpose of balancing equations?

• To indicate the state of matter of each substance

• To show the reactants and products in the correct order

• To ensure the equation follows the correct format

• To ensure all atoms are accounted for in the reactants and products side

Tags

NGSS.MS-PS1-5

What are the larger numbers that you CAN CHANGE in a chemical equation? 

• Coefficient 
• Products
• Reactants
• Subscripts

Tags

NGSS.MS-PS1-5

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

• Coefficient
• Products
• Reactants
• Subscript

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

The number of atoms you begin with in a chemical reaction ...

• must be the same as the number of  atoms you end with
• must be an even number
• can be different to the number you finish with
• changes depending on how much energy is formed

Tags

NGSS.MS-PS1-5

In the compound Mg(NO₃)₂, how many atoms of nitrogen, N, is/are present?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

Which of the models of a chemical reaction best represents a balanced reaction?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Is this equation balanced?

• yes
• no
• Not enough information

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• yes
• no
• Not enough information

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2