Chemical Equations

Determined whether the following equation is balanced or unbalanced. Ag + O_{2 --->} 2Ag₂O

• Balanced

• Unbalanced

Tags

NGSS.MS-PS1-5

Determine whether the following equations is balanced or unbalanced. H₄ + O₂ ---> 2H₂O

• Balanced

• Unbalanced

Tags

NGSS.MS-PS1-5

Determine whether the following equation is balanced or unbalanced. H₂ + Br₂ ---> 2HBr

• Balanced

• Unbalanced

Tags

NGSS.MS-PS1-5

In order for an equation to be balanced, there must be ...

• an equal amount of atoms on both sides

• a greater mass on the product side

• a greater mass on the reactant side

• elements with the same atomic # on both sides

Tags

NGSS.MS-PS1-5

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

• Product
• Reactant
• Chemical Subscript
• Coefficient

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• Product
• Reactant
• Chemical Subscript

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The law of conservation of mass states that....

• Matter can be made
• Matter can be destroyed
• Matter can neither be made or destroyed
• Matter can evaporate

Tags

NGSS.MS-PS1-5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

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

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

Tags

NGSS.MS-PS1-5