Parts of a Chemical Equation

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

• Coefficient

• Subscript

• Atom

• Equation

Is the following equation balanced?
2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O

• yes

• no

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• Coefficient 

• Products

• Reactants

• Subscripts

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

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Identify the Reactants in this equation.

• A

• B

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂ → 2KCl + I₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

• 4Fe + 3O₂ -> 2Fe₂O₃

• 2 Fe + 3O₂ -> Fe₂O₆

• 4 Fe + O₆ -> 2Fe₂O₃

• None of the options are correctly balanced.

Tags

NGSS.MS-PS1-5

Number six (6) is indicating ____ of the equation.

• solid

• liquid

• gas

• aqueous

Tags

NGSS.MS-PS1-4

Is the equation balance?

• Yes, Balanced

• No, Unbalanced

• Reactant Na = 2

• Product Na = 2

Tags

NGSS.MS-PS1-5

What is the term for the substances on the left side of a chemical equation?

• Reactants

• Products

• Coefficients

• Subscripts