Espindola's test review questions

How many molecules of water does this formula indicate you have:

• 5

• 2

• 1

• 10

Tags

NGSS.MS-PS1-1

If the number of atoms of each element in a chemical equation are equal on both sides of a chemical equation, then the equation is

• Balanced

• unbalanced

• equal

• unequal

Which of the following correctly lists the reactants in the chemical equation?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-6

How many atoms of Oxygen are present in the reactants side of the chemical equation?

• 3

• 12

• 24

• 18

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many total elements are in the chemical formula?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

A ​ (a)   is a small number written after an element's symbol in a chemical formula that indicates the number of atoms a a specific element.

• subscript
• Chemical reaction
• coefficient
• product

The ​ (a)   are the elements or compounds on the left side of a chemical equation.

• reactants
• products
• molecule
• balanced

Label the parts of an equation

b

c

d

e

a

Products

Coefficient

Subscript

Yields

Reactants

Which of the following does not accurately describe the Law of Conservation of Mass?

• Matter cannot be created or destroyed.

• The mass of the reactants must equal the mass of the products.

• The atoms of each element must be equal on both sides of a chemical equation.

• The reactants always have more mass than the products.

Tags

NGSS.MS-PS1-5

A chemical equation contains 4 atoms of oxygen on the reactants on the reactants side. How many atoms of oxygen must be present on the products side?

• 2 atoms

• 4 atoms

• 8 atoms

• 10 atoms