1. CRCT Prep

2. A. Ca and F B. Na and Cl C. Ne and Ar D. Li and H
Which pair of elements is most similar?
A. Ca and F
B. Na and Cl
C. Ne and Ar
D. Li and H

3. The picture shows three objects that can be classified in the same group. Which of the following is true for all three objects?
A. They are metals.
B. They rust rapidly.
C. They weigh the same.
D. They are the same color.

4. Which is usually true about metals?
A. Metals melt at lower temperatures than any other elements.
Metals always have their atoms arranged into crystals.
Metals do not combine easily with nonmetals.
Metals conduct electricity more easily than nonmetals.

5. All metallic elements are
A. powdery solids.
B. good thermal insulators.
C. good conductors of electricity.
D. easily melted into liquids.

6. The element beryllium (Be, atomic number 4 and atomic mass 9) is right above magnesium (Mg, atomic number 12 and atomic mass 24) in the periodic table. How many more electrons does magnesium have than beryllium?
A. 5
B. 7
C. 8
D. 15

7. Which elements are represented by the symbols in the formula NaCl?
A. sodium, chlorine
B. sodium, oxygen, hydrogen
C. hydrogen, chlorine
D. chlorine, oxygen

8. On the periodic table, nitrogen is represented by N (atomic number 7)
On the periodic table, nitrogen is represented by N (atomic number 7). N is a chemical
A. equation.
B. period.
C. symbol.
D. group (family).

9. The chemical symbol Al represents which metal on the periodic table?
A. arsenic
B. antimony
C. aurum
D. aluminum

10. A. the number of electrons in the atom’s nucleus.
Each element in the periodic table is assigned an atomic number. This number is the same as
A. the number of electrons in the atom’s nucleus.
B. the number of protons in the atom’s nucleus.
C. the number of neutrons in the atom’s nucleus.
D. the number of protons and neutrons in the atom’s nucleus.

11. Which is the correct symbol for the element sodium?
A. S
B. Al
C. Cl
D. Na

12. The periodic table is used to organize
A. elements.
B. molecules.
C. compounds.
D. protons.

13. D. number of valence electrons
The diagram below shows a block from the periodic table. The number six represents the
A. atomic mass
B. atomic number
C. number of neutrons
D. number of valence electrons

14. Physical & Chemical Properties of Matter I
CRCT Prep

15. A. melt at -47.5oC. B. melt at -95oC. C. boil at 95oC.
If 1kg of the compound toluene melts at -95oC, then 500g of toluene will
A. melt at -47.5oC.
B. melt at -95oC.
C. boil at 95oC.
D. boil at 47.5oC.

16. The drawing below represents a bit used in a power drill.
Which of the following metals is most suitable for making this drill bit?
A. aluminum
B. copper
C. gold
D. silver

17. Which best explains the observation above?
A can of diet soda and a can of regular soda were dropped into a container of water.
Which best explains the observation above?
A. Regular soda is less dense than diet soda.
B. Regular soda is more dense than diet soda.
C. Regular soda has a larger volume than diet soda.
D. Regular soda has a smaller volume than diet soda.

18. A. The mass changes as the altitude of the ball of clay changes.
Which statement is correct concerning the mass of a ball of clay?
A. The mass changes as the altitude of the ball of clay changes.
B. The mass changes as the shape of the ball of clay changes.
C. The mass of the ball of clay is unchanged by the altitude or shape.
D. The mass is doubled when the ball of clay is divided into equal pieces.

19. Mary wants to find the density of a small stone
Mary wants to find the density of a small stone. Which tools will she need?
A. a meter stick and a thermometer
B. a thermometer and a balance
C. a balance and a graduated cylinder
D. a graduated and a meter stick.

20. Bill has an unknown liquid
Bill has an unknown liquid. In five different tests the liquid shows the same properties as water. Bill can conclude that the liquid
A. is definitely water.
B. cannot be water.
C. is partly water.
D. could be water.

21. The observation that ice cubes float in a glass of water can be explained by the fact that
A. most substances have less energy as solids than as liquids.
B. most substances are less dense as solids than as liquids.
C. ice has less energy than liquid water.
D. ice is less dense than liquid water.

22. If you saw an ice cube sink after it was placed in what you thought was a glass of water, which question should you probably ask?
A. What kind of liquid is in the glass?
B. Will the ice melt slower or quicker?
C. How fast did the ice cube sink?
D. How soon would the ice cube start to float?

23. A. bar of soap B. iron nail C. plastic bottle cap D. glass marble
A magnet will attract which of these objects?
A. bar of soap
B. iron nail
C. plastic bottle cap
D. glass marble

24. A. an acid. B. a salt. C. a metal. D. an ester.
An unknown element that is malleable, shiny, and conducts electricity would most likely be classified as
A. an acid.
B. a salt.
C. a metal.
D. an ester.

25. What is a metric unit for density?
A. g/cm
B. cm/g
C. g/cm3
D. cm3/g

26. A. freezing B. condensation C. boiling D. evaporation
When a gas forms a liquid, which process is taking place?
A. freezing
B. condensation
C. boiling
D. evaporation

27. Physical & Chemical Properties of Matter Part II
CRCT Prep

28. B. kilograms/square meter C. milligrams/square meter
Which unit correctly describes density?
A. pounds/square inch
B. kilograms/square meter
C. milligrams/square meter
D. grams/milliliter

29. A. beeswax B. gold C. lead D. oxygen Substance Melting Point beeswax
Based on the melting points shown in the table, which material would still be a solid at 400oC?
A. beeswax
B. gold
C. lead
D. oxygen
Substance
Melting Point
beeswax
62oC
gold
1,063oC
lead
327oC
oxygen
-218oC

30. A. weight. B. gravity. C. mass. D. force.
The amount of matter in an object is called its
A. weight.
B. gravity.
C. mass.
D. force.

31. According to the table, 1985 pennies
Mass (g)
Volume(cm3)
3.5 9
Mass (g)
Volume(cm3)
2.5
0.9
According to the table, 1985 pennies
A. are more dense than 1981 pennies.
B. are less dense than 1981 pennies.
C. are equal in density to 1981 pennies.
D. cannot be compared to 1981 pennies.

32. Which statement is usually true about the electrical properties of metals?
A. Metals have high electrical resistance.
B. Lightweight metals are the best conductors.
C. Metals and plastics are both good insulators.
D. Metals are good electrical conductors.

33. Students poured equal amounts of different liquids to see how the liquids become layered. The denser liquids layered at the bottom. The lighter liquids layered at the top. Which tool should the students use in this experiment?
A. a balance scale
B. a thermometer
C. a magnet
D. a graduated cylinder

34. A. The rock and the chalk have a density greater than water.
A cork floats in water, a rock sinks in water, a soda can floats in water, and a piece of chalk sinks in water. Which statement is correct based on this information?
A. The rock and the chalk have a density greater than water.
B. The rock and the chalk have a density less than water.
C. The cork and the can of soda have a density equal to water.
D. The cork and the can of soda have a density greater than water.

35. Which of these is a change in chemical composition?
A. A lake freezes solid.
B. Gravel, sand, and water are mixed.
C. A copper bar is rolled into a flat sheet.
D. Vinegar bubbles when baking soda is used.

36. A. the paper clip B. the marble C. the ice cube D. the balloon
Which of these is floating on water but sinking in oil?
A. the paper clip
B. the marble
C. the ice cube
D. the balloon

37. What will happen if the lid is removed from a container that holds helium gas?
A. The gas will expand and escape from the container.
B. The gas will slowly change back into a liquid.
C. When light hits the gas, it will change colors.
D. Gravity will keep the gas in the container.

38. If a small drop of oil is dropped into the water, the
oil and water will mix.
oil will rise to the top of the water.
water will take up less space in the jar.
water will rise to the top of the oil.