chapter 12 Chemical Reactions

What is the arrow in a chemical equation...

H_{2 +} O --> H₂O

• Reactants

• Products

• Yields

• Chemical Equation

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

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

Tags

NGSS.MS-PS1-5

In a chemical reaction, everything to the right of the arrow is called ______________.

• Products
• Yields
• Molecules
• Reactants

Tags

NGSS.MS-PS1-5

Which of the following is evidence of a chemical reaction?

• fizzing
• water changing to ice
• saltwater
• paper being cut in half

Tags

NGSS.MS-PS1-2

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-PS1-5

NGSS.MS-PS1-2

Examine the following chemical reaction:

H20 + CO2 → C6H12O6 + O2

What are the reactants?

• H20 + CO2

• C6H12O6 + O2

• →

• H20 + CO2→ C6H12O6 + O2

Tags

NGSS.MS-PS1-1

Examine the following chemical reaction:

H2O2 → H2O + O2

What are the products

• H2O2

• H2O + O2

• H2O2→H2O + O2

Tags

NGSS.MS-PS1-1

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.

• Coefficient
• reactant
• subscript
• product 

Tags

NGSS.MS-PS1-5

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.