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Q 1/9
Score 0
A child fills a bucket with saltwater and sand. How are the contents of the bucket classified?
60
a homogeneous mixture
a heterogeneous mixture
a compound
a solution
Q 2/9
Score 0
Which substance is most likely classified as a colloid?
60
soft drink
fog
water
oxygen gas
9 questions
Q.
A child fills a bucket with saltwater and sand. How are the contents of the bucket classified?
1
60 sec
Q.
Which substance is most likely classified as a colloid?
2
60 sec
Q.
A student added 10 mL of sodium chloride, NaCl, to 100 mL of water and then stirred the mixture until the salt was no longer visible. Which of the following BEST describes the mixture?
3
60 sec
Q.
Alyssa investigates properties of matter. The answer to which question would BEST determine whether a substance is an element or a compound?
4
60 sec
Q.
What do any two samples of the element mercury (Hg) have in common?
5
60 sec
Q.
Which can be broken down chemically into simpler substances?
6
60 sec
Q.
In the reaction shown, iron reacts with water to form iron oxide and hydrogen gas
7
60 sec
Q.
A student mixes salt and water in a beaker to form a solution. What properties of the substances would allow the student to then separate the components?
8
60 sec
Q.
A student observes a substance that is highly reflective and able to conduct electricity. The substance also has a high melting point. Which is the MOST likely classification for this substance?
