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you must als0____________________ the volume
• cancel (your response)
• half
• double (correct answer)
Points earned: 0 out of 5
What is the density of a substance with a mass of 12g and a volume of 10 mL?
Your response:
1.2g/cm3
Sample answer:
1.29 g/ml
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
If an object has a density less than 1g /mL , it will _______ in water
• float (correct answer, your response)
• sink
• float & sink
Points earned: 5 out of 5
Josephine knows aluminum has a density of 2.7g/cm3. What is the mass of aluminum if it has a volume of of 22 cm3?
Your response:
59.4g
Sample answer:
59.4g
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
Dan took 18 g of silver and found it had a volume of 2cm3. What is its density?
Your response:
9g/cm3
Sample answer:
9g/cm3
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
Sandra wanted to find the mass of a piece of wood. The density of this wood is 0.85g/cm3. Its volume is 20 cm3. What is the mass?
Your response:
17g
Sample answer:
17g
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
A placebo is a _________
• a piece of DNA
• fake medicne used in a medical study (correct answer, your response)
• part of a chromosome
Points earned: 5 out of 5
What is the density of water in g/mL?
Your response:
1.0g/mL
Sample answer:
1.00 g/mL
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
Tom knows water has a density of 1.0g/mL. If he has 100g of water, what is the volume of water?
Your response:
0.01mL
Sample answer:
100mL
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
A variable in science is
• part of an equation (your response)
• a thing to measure (correct answer)
• a math operation
Points earned: 0 out of 5
Finding the volume of an irregular object you should use
• the equation l x w h
• water displacement (correct answer, your response)
• finding the meniscus and reading the answer
Points earned: 5 out of 5
Sam poured 20 ml of a liquid into a graduated cylinder. He found the mass of the liquid to be 60g. What is its density?
Your response:
3g/cm3
Sample answer:
3g/mL
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
Katrina had a piece of wood with the following dimensions: length= 3cm. width = 3 cm , height = 1 cm. The mass was 6 g. What is the density of the wood?
Your response:
0.6g/cm3
Sample answer:
0.66g/cm3
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
To find the volume of a regular object, like a cube you should use
• the equation l x w h (correct answer, your response)
• finding the meniscus and reading the answer
• water displacement
Points earned: 5 out of 5
Ben poured 15mL of water into a beaker. What is the water's mass?
Your response:
15g
Sample answer:
15g
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
Sam has a clear, colorless liquid. The mass is 100g and the volume is 100mL. Is it possible for the liquid to be water? ( Answer yes or no)
Your response:
yes
Sample answer:
yes
Answers may vary.
Points earned: 0 out of 5 (Instructor review pending)
If an object has a density greater than 1 g/ ml it will ______ in water
• sink (correct answer, your response)
• float
• float & sink
Points earned: 5 out of 5
The formula of density is
• volume / mass
• mass/volume (correct answer, your response)
• mass x volume
Points earned: 1 out of 1
If the mass is 10 g and the volume is 5 cm3 , the density of the object is
• 5g/ cm3
• 2g/ mL
• 2 g/ cm3 (correct answer, your response)
Points earned: 5 out of 5
Finding the volume of a liquid you should use
• the equation l x w h
• finding the meniscus and reading the level (correct answer, your response)
• water displacement
Points earned: 5 out of 5
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