Balancing Chemical Equations

When chemical bonds between atoms or molecules are formed or broken they cause a . . .

• Physical Change

• Chemical Change

• Problem

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Liquid water is made from . . .

• Hydrogen gas and Nitrogen gas

• Hydrogen gas and Helium gas

• Oxygen gas and Nitrogen gas

• Oxygen gas and Hydrogen gas

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The substances that undergo a change, or the "ingredients" are called the . . .

• Products

• Coefficients

• Reactants

• Subscripts

Tags

NGSS.MS-PS1-1

The arrow in a chemical equation should be read as . . .

• "yields"

• "slow down"

• "goes to"

• "next"

At the end of a chemical reaction, the reactants and the _________ must be balanced.

• products

• subscripts

• ingredients

Tags

NGSS.MS-PS1-5

The "Law of Conservation of ______" states that matter can neither be created nor destroyed.

• Energy

• Mass

• Motion

• Heat

Tags

NGSS.MS-PS1-5

If 2 Hydrogen's go into the reaction, it is okay if only 1 comes out.

• TRUE

• FALSE

Tags

NGSS.MS-PS1-5

The BIG number in front of a molecule is called the ____________.

• Reactant

• Superscript

• Subscript

• Coefficient

It is okay to change the little subscript numbers when balancing an equation.

• TRUE

• FALSE

How many atoms of Chlorine (Cl) are there in 5HCl₂?

• 5

• 2

• 10

• 7

Tags

NGSS.MS-PS1-1