1. When a rock is dropped into a graduated cylinder, it raises the
water in the graduated cylinder from 35ml to 40ml. If the mass
of the key is 50g, what is the density of the key, in grams per
milliliter?
Use the picture to answer the following question.
7
The picture shows a graduated cylinder before and after a rock was added. What is t
rock?
Grade 8 Science, SW1
2. The following table shows properties of four different sample materials. One
of these materials is cork, a type of wood that floats in water.
Given that the density of water is 1g/mL, which of these samples is most likely
cork?
• A Sample 1
• B Sample 2
• C Sample 3
• D Sample 4
Physical Properties
Sample Number Mass Volume
Sample 1 89 grams 10 ml
Sample 2 26 grams 10 ml
Sample 3 24 grams 100 ml
Sample 4 160 grams 100 ml
3. Vanessa was given a science kit containing a small piece of metal and the Data
Table shown above. Each side of the metal was measured to be 2cm, and he
measured the mass of the cube to be 41.6g. Based on the data table above,
which mineral isVanessa’s cube composed of?
4. If the balance on the triple beam balance shows the mass of a book in grams,
how many kilograms is the book? (remember King Henry Died by Drinking
Chocolate Milk)
A. 0.6319 kg
B. 6.319 kg
C. 632 kg
D. 631,900 kg
E. None of the above
B 4
C 7
D 12
12
What is the mass, in grams, shown on the balance below?
5. • How many negatively charged particles are in the Bohr atom model shown
to the above?
