6th Grade: Chemistry

1. Philip is trying to classify materials by their physical properties. When he is observing materials that are found as a gas at room temperature, what type of substance is he most likely observing?

• A. Metal
• B. Non-Metal
• C. Metalloid
• D. Ceramic

2. Which of the following have properties of both metals and nonmetals?

• A. Metals
• B. Non-Metals
• C. Metalloids
• D. All of the above

3. Students were given four unknown substances and asked to observe their characteristics. Their observations are shown in the table below. Which of the unknown substances is MOST likely a metal?

• A. 1
• B. 2
• C. 3
• D. 4

4. An electric scale and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14g and a volume 2mL. What is the density of the mineral sample?

• A. 0.14 g/mL
• B. 28 g/mL
• C. 12 g/mL
• D. 7 g/mL

5. The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in the cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table. The students most likely have which type of rock?

• A. Coal
• B. Dolomite
• C. Peridotite
• D. Sandstone

6. Determine the density in g/mL of a mineral that has a volume of 3.8 mL and a mass of 22.4 g.

• A. 5.9 g/mL
• B. 85.1 g/mL
• C. 18.6 g/mL
• D. 7.3 g/mL

7. Which of the following are signs that indicate a chemical change has happened? (check all that apply)

• Smoke
• Temperature change
• Something disappeared
• Something appeared

8. Something changing states of matter (gas - liquid - solid) would be an example of....

• Chemical change
• Physical change

9. Chopping something into several small pieces would be an example of....

• Chemical change
• Physical change

10. Burning a log in a fireplace would be an example of....

• Chemical change
• Physical change