Junior Cycle Rates of reactions

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing surface area

• all of these

Tags

NGSS.HS-PS1-5

Which of the following increase the reaction rate?

• less surface area

• lower temperature

• increased concentration

Tags

NGSS.HS-PS1-5

How can you increase the rate of a reaction?

• Decrease the pressure

• Decrease the concentration

• Increase the concentration

Tags

NGSS.HS-PS1-5

Why does breaking up a solid reactant increase the rate of reaction?

• it creates more solid
• it creates more energy
• it increases the surface area
• it increases the concentration

Which piece of equipment is not shown in this diagram?

• Beehive shelf

• Graduated cylinder

• Conical flask

• Beaker

A chemical that changes the rate of a reaction but is not used up in the reaction is called a ...

• Catalyst

• Product

• Reactant

• Indicator

Concentration of a chemical is ...

• a measure of how much of a chemical you have.

• a measure of how strong the chemical is.

• a measure of how dangerous a chemical is.

• a measure of how quickly a chemical will react.

In an experiment, a 2 g lump of zinc and 2 g of powdered zinc are added separately to equal volumes of dilute sulphuric acid. The solid line on the graph shows the volume of gas given off when the 2 g lump is used. Which dotted line is obtained when the zinc is powdered? 

• A
• B
• C
• D

Tags

NGSS.HS-PS1-5

Identify where the reaction has finished

• A
• B
• C
• D

If you have 15 grams of Baking Soda and 20 grams of Vinegar as products, what would you expect the mass of your reactants to be?

• 15 grams

• 20 grams

• 5 grams

• 35 grams

Tags

NGSS.HS-PS1-7