Have an account?
Skip to Content
Build your own quiz
12 questions
Show Answers
See Preview
- 1. Multiple Choice
Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?
A gas is formed when baking soda and vinegar are mixed.
Baking soda dissolves in vinegar when they are mixed.
Vinegar turns into alcohol when it is mixed with baking soda.
A precipitate is formed when baking soda and vinegar are mixed.
- 2. Multiple Choice
A granular substance is added to a liquid. Which of the following would provide evidence to suggest a chemical change has taken place?
The liquid gives off heat.
The granules dissolve completely.
The volume of the liquid increases.
The granules seem to get smaller.
- 3. Multiple Choice
When two substances are mixed, they might form a new substance. Which of the following would indicate that a new substance has been formed?
The temperature of the mixture decreases.
The volume of the mixture increases.
The mass of the mixture increases.
One of the substances dissolves.
- 4. Multiple Choice
A student mixes two clear liquids together. After a few minutes, a white powder can be seen settling on the bottom of the test tube. Which of the following is a conclusion that the student can draw based on these observations? The two clear liquids -
have combined to produce a new substance.
were pure substances before they were mixed.
are toxic and should be handled with extreme caution.
have been stored too long and are no longer good.
- 5. Multiple Choice
Which of the following characteristics is shared by all chemical reactions?
Produce a precipitate
Show a color change
Release heat energy
Form new substances
- 6. Multiple Choice
A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when -
the crystals were added to the liquid.
the crystals dissolved in the liquid.
the temperature of the liquid increased.
the color of the mixture changed.
- 7. Multiple Choice
All of the following are evidence of a chemical change EXCEPT -
change in state of matter.
formation of a gas.
color change.
precipitate forms.
- 8. Multiple Choice
If we have any substance, it can be concluded that a chemical change has happened if -
there is a color change.
the state of matter changes.
there is a decrease in mass.
the matter is stirred thoroughly.
- 9. Multiple Choice
Which of the following situations provides evidence that a chemical change has taken place?
Water, when boiled, evaporates and turns into vapor.
Sugar, when added to iced tea, dissolves into the liquid.
Two liquids are mixed, and a solid substance forms.
A piece of paper is cut into many small pieces.
- 10. Multiple Choice
Which of the following would indicate the formation of a new substance?
A liquid turns to a solid
A sample of metal melts
Bubbles and fizzing occur
A solid dissolves in a liquid
- 11. Multiple Choice
Four substances were mixed with a clear liquid. The observations are recorded in the following table. Based on the observations, for which mixture is there best evidence that a new substance was formed?
Substance 1
Substance 2
Substance 3
Substance 4
- 12. Multiple Choice
A student notices that sugar, when heated over a flame, turns black. How does the student know that a new substance is being formed?
A temperature of the sugar increases.
The color of the sugar changes to black.
Sugar began to melt within the test tube.
Sugar started as white crystals.
- Answer choicesTagsAnswer choicesTags