Worksheets🚪 Exit Ticket 🎟️ - T10 Lesson 4 Temperature and Rate of a Chem
Total questions: 18
Worksheet time: 9mins
What must reactants do for a chemical reaction to take place?
Stay still and avoid collisions
Move fast enough and hit each other hard enough
Move slowly and gently touch
Remain at a constant temperature
How does increasing the temperature affect reactant molecules?
It decreases their speed
It has no effect on their speed
It increases their average speed
It stops their movement
What is one objective of the lesson?
To identify and control variables in an experiment
To memorize chemical formulas
To write a report on chemical reactions
To draw diagrams of molecules
What is one piece of evidence that a chemical reaction has occurred when vinegar is mixed with baking soda?
Formation of a solid
Production of a gas
Temperature decrease
Color change
Which of the following is a sign of a chemical reaction?
Formation of a gas
Light is given off
Change in temperature
Change in color
What happens to the temperature of a reaction that shows a chemical reaction occurred?
It always increases
It always decreases
It changes
It remains constant
Which gas is produced when vinegar reacts with baking soda?
Oxygen
Carbon dioxide
Hydrogen
Nitrogen
Which of the following is NOT evidence of a chemical reaction?
Production of a gas
Formation of a precipitate
Change in temperature
Dissolving of a solid
What type of reaction occurs when a color change is observed?
Physical change
Chemical reaction
Evaporation
Condensation
What is the result of mixing two solutions that form a precipitate?
A gas is released
A solid is formed
The temperature decreases
The solutions evaporate
Which of the following is a common result of a chemical reaction?
Formation of a new substance
Increase in mass
Decrease in volume
No change
What is the evidence of a chemical reaction when two substances are mixed and bubbles are produced?
Formation of a precipitate
Production of a gas
Change in color
Increase in temperature
What happens to the molecules during a chemical reaction that results in a color change?
They dissolve
They form a gas
They change structure
They evaporate
Explain how an increase in temperature affects the rate of a chemical reaction.
An increase in temperature only affects the color of a chemical reaction.
An increase in temperature has no effect on the rate of a chemical reaction.
An increase in temperature generally increases the rate of a chemical reaction.
An increase in temperature generally decreases the rate of a chemical reaction.
Which of the following would increase the rate of a chemical reaction?
Freezing the chemicals
Increasing the temperature of the reagents
Removing a catalyst
Using less chemicals
Which colour on the graph would represent the solution with the higher temperature?
Red
Blue
None
Both
What happens to reaction rate when temperature is decreased?
it increases
it decreases
it stays the same.
What is the role of temperature in amplifying chemical reactions?
Temperature has no effect on chemical reactions.
Temperature increases the rate of chemical reactions by providing more energy for molecules to react.
Temperature only affects physical reactions, not chemical reactions.
Temperature slows down chemical reactions by reducing the energy available for molecules to react.
