Chemical Reactions

Front

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

Back

Coefficient

Front

Law of Conservation of Mass

Back

It states that matter cannot be created or destroyed.

Tags

NGSS.MS-PS1-5

Front

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

Back

2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

Back

Reactants

Front

How many atoms of carbon (C) are in C₆H₁₂O₆?

Back

6

Tags

NGSS.MS-PS1-1

Front

How many Aluminum are in Al₂O₃?

Back

2

Tags

NGSS.MS-PS1-1

Front

How many Sodium (Na) are in 6NaCl?

Back

6

Front

What is the little number after an element in a chemical equation called? Example: H₂

Back

Subscript

Front

Which of the following equations are correctly balanced? Options: 12CO₂ +H₂O --> C₆H₁₂O₆ + O₂, CO₂ + 9H₂O --> C₆H₁₂O₆ + O₂, CO₂ + H₂O --> 3C₆H₁₂O₆ + O₂, 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

Back

6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is the following equation balanced?
Al + O₂ --> 2Al₂O₃

Back

No!

Tags

NGSS.MS-PS1-5