Chemical Interactions

What does (aq) mean in a chemical equation?

• Aqueous-- a solid powder dissolved in water

• Aqueous-- a naturally occurring liquid

• Aquinas-- solid at room temperature

• Aquinas-- A catholic priest and Doctor of the Church

Which list of coefficients will balance the equation:

_ SiCl₄ → _ Si + _ Cl₂

• 1,1,1

• 1,1,2

• 2,2,2

• 1,2,1

Tags

NGSS.HS-PS1-7

What are the substances on the left side of the arrow that are about to react called?

• Reactions

• Reactants

• Products

• Ingredients

What do you call the solid formed when you react two aqueous solutions?

• a precipitate

• a olid

• Displaced

• Decomposed

Which list of coefficients will balance the equation:

__CO + __ O₂ → __ CO₂

• 1,2,1

• 2,1,2

• 2,2,2

• 1,1,1

Tags

NGSS.HS-PS1-7

I reacted 40g of vinegar with 20g of baking soda in an open beaker. At the end of the reaction there were only 55g of product. What happened to the other 5 grams?

• The were destroyed

• They weren't ever created

• They escaped the closed system as a gas

• They escaped the open system as a gas

Tags

NGSS.HS-PS1-7

How many atoms of hydrogen are in 1 unit of Mg(C₂H₃O₂)₂

• 3

• 5

• 6

• 9

What type of reaction is shown?

• Synthesis

• Decomposition

• Single Displacement

• Double Displacement

What are the new substances on the right of the arrow that are produced by a reaction called?

• Reactants

• Products

• Ingredients

• Reactions

Tags

NGSS.MS-PS1-5

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Tags

NGSS.MS-PS1-1