Terms to know
Mention 3 factors affecting rate of reaction.
Temperature
Concentration of solution
Surface area
Catalyst
Name a substance that enters a chemical reaction and make it faster without being changed at the end.
Catalysts
Chemical reactions tend to slow down when the temperature rises.
Explain your answer using the particles theory of matter.
False, when we decrease temperature, particles lose energy, they move slower.
Chances of collisions decrease.
Write a word equation for the reaction of Aluminium and Copper Sulfate.
What type of reaction is this?
Copper sulfate+Aluminium-)copper+ Aluminium Sulfate
Displacement.
Explain why the reaction rate is faster using powder instead of lumps.
The surface area is bigger in powder
How can u measure the rate of reaction for the reaction of Magnesium with hydrochloric acid.
By measuring the volume of hydrogen gas produced per unit time.
Measuring the mass of the contents of the flask
Factor that results in more collisions due to the presence of more particles in a certain space
What is concentration?
Increasing the total surface area of solid or liquid reactants increases the rate of the reaction.
Explain your answer
True
The reaction only takes place on the surface
Write 3 factors that increase the rate of chemical reaction
Increasing temperature
Increasing the concentration of solution
Increasing the surface area
Is the reaction of Cesium with water fast or slow.
Very fast, explosive
What should happen between particles unordered for a reaction to take place.
Particles should collide
Using a mortar and pestle to grind up a solid into smaller pieces does this to the surface area of the solid?
True
What safety precaution should be taken during the reaction of Calcium carbonate +Carbon dioxide.
Wear goggles
Wear gloves
Keep a distance from the reaction
Explain in terms of particles theory why increasing temperature, increases the rate of reaction.
Particles gain energy , they move faster.
Chances of collisions increases
Write a word equation for the reaction of Calcium carbonate with hydrochloric acid
Calcium carbonate +hydrochloric acid-) calcium chloride +water +Carbon dioxide
Four factors that affect rate of reaction (from your book).
What is temperature, particle size, concentration, and catalysts?
The chemical formula of Calcium Carbonate is CaO.
Explain your answer
False
CaCO3
Mention 2 control variables for measuring the rate of reaction of Magnesium with hydrochloric acid at 2 different temperatures.
40 degrees and 90 degrees.
Anything except temperature.
Concentration of acid
Mass of Magnesium ribbon
Volume of acid added
Explain why it is hard to measure the rate of reaction of tin with Hydrochloric acid.
Because tin is very low in reactivity
Explain on terms of particles why increasing concentration of a solution increases the rate of chemical reaction.
Because we increase the number of particles so chances of particles colliding increasing
Mention one way of collecting and measuring the volume of carbon dioxide gas in the reaction of marble chips and hydrochloric acid.
By using a gas syring
Or collection it using an inverted measuring cylinder under water
The reaction rate is the fastest in thr beginning of the reaction.
Explain your answer
True
Write a word equation for the reaction of Zinc with hydrochloric acid
Zinc+ Hydrochloric acid-) zinc chloride +Hydrogen
Write a word equation for the reaction of hydrochloric acid with calcium carbonate
Calcium Carbonate+Hydrochloric acid-) calcium chloride+Carbon dioxide+water