Physical and Chemical Equations

How many Phosphorus are there on the product side of this equation?

• 1

• 8

• 20

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many molecules of Oxygen gas are there on the reactant side of this equation?

• 4

• 8

• 2

• 3

What is the only sure evidence of a chemical reaction?

• Change in size or shape

• A precipitate

• Formation of a new substance

• Change in state of matter

Tags

NGSS.MS-PS1-2

Which of the following is a physical property?

• magnetism

• burning paper

• A precipitate forms from 2 solutions

• Ability to rust

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

• 1,1,2,1

• 1,1,1,2

• 1,2,1,1

• 2,1,1,1

Tags

NGSS.MS-PS1-5

Which number should go in the blank to balance the equation? _ H2 + O2 -> 2 H2O

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-5

Balance this equation.
_Mg + _Cl₂ --> _MgCl₂

• 2,1,1

• already balanced

• 1,2,1

• 1,1,2

Tags

NGSS.MS-PS1-5

Name the part in red:

_2_H₂ + _1_O₂ -> _2_H₂O

• Coefficient

• Product

• Yield

• Subscript

Tags

NGSS.MS-PS1-5

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient

• Product

• Reactant

• Subscript

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient

• Product

• Reactant

• Subscript

Tags

NGSS.MS-PS1-5