balanced/unbalanced equations review

In this image, the information in red is called the_______.

• Products
• Reactants
• Chemical Subscript
• Ingredients

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In this image, the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript
• Final chemical

What is the arrow in a chemical equation say to us as chemists...
H_{2 +} O --> H₂O

• Reactants
• Products 
• "Makes" or "Yields" 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

How many ELEMENTS are in the compound H₂O

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many ELEMENTS are in the compound O₂

• 1
• 2
• 3
• 4

How many ATOMS of Carbon are in 3C₂H₄O

• 2
• 3
• 4
• 6

Tags

NGSS.MS-PS1-1

How many ATOMS of Oxygen are in 3Fe₂O₃

• 2
• 3
• 6
• 9

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

• Balanced
• Unbalanced

Tags

NGSS.MS-PS1-5

Is the following equation balanced or unbalanced ? 
N₂ +3 H₂ --> 2NH₃

• Balanced
• Unbalanced

Tags

NGSS.MS-PS1-5

Why is the following chemical equation not balanced?
H_{2 +} O₂ --> H₂O

• each side of the equation has a different number of oxygen atoms
• each side of the equation has a different number of hydrogen atoms
• each side has the same mass

Tags

NGSS.MS-PS1-5