Balancing and Reaction Types Quiz

Balance this equation. _CF₄ + _Br₂ → _CBr₄ + _F₂

• 3,1,2,1

• 1,2,1,2

• 2,2,2,2

Tags

NGSS.MS-PS1-5

According to the Law of Conservation of Mass (Matter), Matter cannot be ​ (a)   or ​ (b)   , it can only be ​ (c)   . This means however many atoms of an element we have before a reaction must be ​ (d)   to the number after a reaction.

• created
• destroyed
• changed
• equal

Tags

NGSS.MS-PS1-5

What is the total number of atoms present in 5Na₃PO₄

• 5
• 40
• 55
• 8

Tags

NGSS.MS-PS1-1

What is the little number after an element in a chemical equation called.
Example: H₂

• Coefficient 

• Subscript

• Atom

• Equation

The substances that go into a reaction are called the _______.

• products

• reactants

Tags

NGSS.MS-PS1-1

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

• Coefficient

• Atom

• Subscript

• Equation

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

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-5

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

Tags

NGSS.MS-PS1-5

One reactant into several products.

• Decomposition
• Synthesis
• Combustion
• Single Replacement

Tags

NGSS.MS-PS1-5

One element replaces another in a compound.

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2