KS3 Chemistry - Chemical Reactions

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

• Yields

• Reactants

• Products

• Precipitates

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

• Products
• Coefficients
• Precipitates
• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify the reactant(s) and product(s) of the reaction.

• All three are reactants and none are products.

• Hydrogen and water are the reactants, and oxygen is the product.

• Water and oxygen are the reactants, and hydrogen is the product.

• Hydrogen and oxygen are the reactants, and water is the product.

In the following equation, what are the reactants?
CaO + 3 C → CaC₂ + CO

• CaO + 3 C
• CaC₂ + CO
• 3 C → CaC₂
• the stuff on the outside

You know if a chemical reaction has occurred if

• there is bubbling

• there is a color change.

• there is a temperature change.

• All of these answers are evidence.

What are the states of matter?

• solid, liquid, and juice
• solid and liquid
• solid and gas
• solid, liquid, and gas

Tags

NGSS.MS-PS1-4

What type of reaction happens when a fuel is burnt?

• neutrailisation

• combustion

• physical change

• changing state

What products are made during a combustion reaction?

• carbon dioxide and hydrogen

• carbon dioxide and water

• carbon and water

• carbon and hydrogen

How do you test for carbon dioxide?

• Bubble the carbon dioxide into limewater and it will turn from pink to blue

• Bubble the carbon dioxide into limewater and it will turn from blue to pink

• Bubble the carbon dioxide into limewater and it will turn from colourless to white and cloudy

• Bubble the carbon dioxide into limewater and it will turn from white to colourless

How do you test for water?

• Pink cobalt chloride paper turns white

• Pink cobalt chloride paper turns blue

• White cobalt chloride paper turns blue

• Blue cobalt chloride paper turns pink