Physical Changes and Chemical Reactions

the starting materials in a chemical reaction

• Products
• Reactants
• Starters
• Enders

The substances listed on the right side of a chemical equation are the

• Yields
• Reactants
• Products
• Precipitates

Tags

NGSS.MS-PS1-5

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O
• MgO
• Mg and MgO
• O and MgO

What are Chemical Reactions?

• It's when you mix substances.
• a process in which atoms rearrange to form new substances
• When something bubbles.
• letter and numbers showing the types and number of atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

• 1

• 6

• 2

Tags

NGSS.MS-PS1-5

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

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