Chem Module 4 Pre-Test and Post-Test

What is the number that can be placed in front of a chemical formula to balance?

• product

• coefficient

• reactant

• subscript

Tags

NGSS.MS-PS1-5

What is the number written below & to the right of a chemical symbol?

• subscript

• reactant

• product

• coefficient

Substances that form as the result of a chemical reaction are called...

• products

• reactants

• coefficients

• subscripts

Tags

NGSS.MS-PS1-5

Substances present at the start of a chemical reaction are called...

• subscripts

• coefficients

• reactants

• products

How many iron atoms are in

Fe(NO₃)₂?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

How many nitrogen atoms are in

Fe(NO₃)₂?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in

Fe(NO₃)₂?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

A precipitate is...

• a liquid that forms when two solids are reacted

• a solid that forms when two aqueous solutions are mixed

• a gas that forms when vinegar and baking soda react

• a change of color in a solution

Tags

NGSS.MS-PS1-2

The Law of Conservation of Mass States

• Energy cannot be created nor destroyed, it can only change form.

• Mass cannot be created nor destroyed, it can only change form.

• Mass can be created or destroyed, it cannot change form.

Tags

NGSS.MS-PS1-5

What is the right ratio of chemicals for the Balanced Chemical Equation?

__CH₄ + __O₂ --> __CO₂+ __H₂O

• 2,1 --> 2,1

• 1,2 --> 1,1

• 1,2 --> 1,2

• 1,2 --> 2,1

Tags

NGSS.MS-PS1-5