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Q 1/10
Score 0
Which process is an example of a chemical change?
30
drying clothes in the dryer
heating a cup of tea
cooking a steak
chopping a tree
Q 2/10
Score 0
Which property could be used to identify a substance?
30
mass
volume
density
weight
10 questions
Q.
Which process is an example of a chemical change?
1
30 sec
Q.
Which property could be used to identify a substance?
2
30 sec
Q.
In the laboratory, Austin is given a mixture of iron fillings, sand, and salt. To separate the mixture, Austin uses a magnet, boiling water, and a filter. Which statement is true about the process Austin uses to separate this mixture?
3
30 sec
Q.
Which statement indicates that a chemical reaction has taken place?
4
30 sec
Q.
A chemical reaction occurs. Which statement is true of the reactants and the products in the reaction?
5
30 sec
Q.
A students observed a precipitate form during a chemical reaction. Which of the following did the student most likely observe?
6
30 sec
Q.
Which process is an example of a chemical change?
7
30 sec
Q.
A science class did an experiment in which two substances were mixed. After 15 minutes, everything looked the same, but the students noticed an odor coming from the experiment. What does this likely indicate?
8
30 sec
Q.
Use the picture to answer the question. Which of the following is the best evidence that a chemical change has taken place?
9
30 sec
Q.
Two metal samples are each placed in a beaker containing the same solution. Based on what you observe in the beakers, which of the following statements is true?
