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Chem - Modified Collins/Carreiro

Total questions: 24

Worksheet time: 54mins

Name
Class
Date
1-14.
1.

  1. Salt (NaCl) is a(n):

a)

  1. Element

b)

  1. Compound

c)

  1. Homogeneous Mixture

2.

  1. Sand and water is a(n):

a)

  1. Compound

b)

  1. Homogeneous Mixture

c)

  1. Heterogeneous Mixture

3.

  1. Salt and water is a(n):

a)

  1. Compound

b)

  1. Homogeneous Mixture

c)

  1. Heterogeneous Mixture

4.

  1. Neon (Ne) is a(n):

a)

  1. Element

b)

  1. Compound

c)

  1. Homogeneous Mixture

5.

  1. The only type of matter where there is a clear and visible separation of the parts is: 

a)

  1. Compound

b)

  1. Homogeneous Mixture

c)

  1. Heterogeneous Mixture

6.

  1. Density is described as:

a)

  1. The ratio between the mass and volume of a substance

b)

  1. Anything that has mass and volume

c)

  1. The space that matter takes up

7.

  1. Mass is described as:

a)

  1. The amount of matter in a sample

b)

  1. The space that matter takes up

c)

  1. Anything that has mass and volume

8.

  1. Matter is described as:

a)

  1. The amount of matter in a sample

b)

  1. The space that matter takes up

c)

  1. Anything that has mass and volume

9.

  1. Volume is described as:

a)

  1. The amount of matter in a sample

b)

  1. The space that matter takes up

c)

  1. Anything that has mass and volume

10.

  1. A chemical change could have all the following characteristics EXCEPT:

a)

  1. Same materials, different form

b)

  1. Explosions could happen

c)

  1. New materials forming

11.

  1. Which one of the following is a chemical change?

a)

  1. Boiling

b)

  1. Dissolving

c)

  1. Rusting

12.

  1. What kind of property is volume?

a)

  1. Chemical property

b)

  1. Extensive physical property

c)

  1. Intensive physical property

13.

  1. What kind of property is flammability?

a)

  1. Chemical property

b)

  1. Extensive physical property

c)

  1. Intensive physical property

14.

  1. What kind of property is conductivity?

a)

  1. Chemical property

b)

  1. Extensive physical property

c)

  1. Intensive physical property

15-20.

Gold is metallic, with a yellow colour when in a mass, but when finely divided it may be black, ruby, or purple. It is the most malleable and ductile metal; 1 ounce (28g) of gold can be beaten out of 300 square feet. It is a soft metal and is usually alloyed to give it more strength. It is a good conductor of heat and electricity and is unaffected by air and most reagents. Gold is usually alloyed in jewelry to give it more strength, and the term "carat" describes the amount of gold present (24 carats is pure gold). It is estimated that all the gold in the world so far refined could be placed in a single cube 60 ft. on a side.

15.

  1. Gold is a well-known conductor of heat is:

a)

  1. Physical

b)

  1. Chemical 

c)

  1. Not listed in the passage

16.

  1. Gold will react with the halogens is:

a)

  1. Physical

b)

  1. Chemical 

c)

  1. Not listed in the passage

17.

  1. Gold does not react with air:

a)

  1. Physical

b)

  1. Chemical 

c)

  1. Not listed in the passage

18.

  1. If you had to separate a mixture of different dyes, what technique would you use?

a)

  1. Filtration

b)

  1. Chromatography

c)

  1. Crystallization

19.

  1. If you had to separate a mixture of salt and sand, what technique would you use?

a)

  1. Filtration

b)

  1. Chromatography

c)

  1. Crystallization

20.

  1. If you had to separate a mixture of sand and water, what technique would you use?

a)

  1. Filtration

b)

  1. Chromatography

c)

  1. Crystallization

21-24.
21.

  1. The only diagram above which represents a mixture is the:

a)

  1. Top picture

b)

  1. Bottom left picture

c)

  1. Bottom middle picture

22.

  1. Change #1 is:

a)

  1. Chemical

b)

  1. Physical

c)

  1. Impossible

23.

  1. Change #2 is:

a)

  1. Chemical

b)

  1. Physical

c)

  1. Impossible

24.

  1. Change #3 is:

a)

  1. Chemical

b)

  1. Physical

c)

  1. Impossible

25-29.
25.

  1. The change from A to B is called:

a)

  1. Boiling

b)

  1. Condensing

c)

  1. melting

26.

  1. The change from A to C is called:

a)

  1. Melting

b)

  1. Condensing

c)

Boiling

27.

  1. The change from B to C is called:

a)

  1. Boiling

b)

  1. Condensing

c)

  1. Melting

28.

  1. The change from B to A is called:

a)

  1. Melting

b)

  1. Subliming

c)

  1. Freezing

29.

  1. The change from C to A is called:

a)

  1. Melting

b)

  1. Subliming

c)

  1. Freezing

30.

  1. If you place an object with a density of 0.50 g/ml in a sample of water (D = 1.00 g/ml), what will happen?

a)

  1. It will be suspended.

b)

  1. It will sink.

c)

  1. It will float.

31.
31.

  1. Determine the density of gasoline (red line) by finding the slope of its trendline:  The density of gasoline is:

a)

  1. 1.00 g/ml

b)

  1. 2.00 g/ml

c)

  1. 0.70 g/ml

32-33.
32.

  1. Object E will:

a)

  1. Be suspended.

b)

  1. Sink.

c)

  1. Float.

33.

  1. Object G will:


a)

  1. Be suspended.

b)

  1. Sink.

c)

  1. Float.

34.

  1. mass = density × volume

  2. Determine the mass in grams of an object if it has a density of 5.65 g/ml and a volume of 3.2 ml.

a)

  1. 0.566 g

b)

  1. 1.64 g/ml

c)

  1. 18.08 g

35.

  1. density = mass ÷ volume

  2. What is the density of an object with a mass of 45 grams and a volume of 15 ml?

a)

  1. 3.0 g/ml

b)

  1. 0.333 g/ml

c)

  1. 675 g/ml

36.

  1. volume = mass ÷ density

  2. What is the volume of an object with a mass of 12 grams and a density of 3 g/ml?

a)

  1. 4 ml

b)

  1. 36 ml

c)

  1. 0.67 ml

37.
37.

  1. The following statements are accurate about the particle diagram below EXCEPT:

a)
It shows a reversible change from gas to solid.
b)
It depicts a reaction that produces heat and light.
c)
It is a permanent chemical change to make a new material.
38.
38.

  1. The models shown represent the plum pudding model of the atom (top) and the nuclear model of the atom (lower).  The model changed with Rutherford's gold foil experiment in which he discovered the:

a)

  1. Electron

b)

  1. Proton

c)

  1. Nucleus

39.
39.

  1. The diagram below represents the reaction of calcium with a solution of zinc carbonate to make zinc and a solution of calcium carbonate.  How many grams of zinc will form?  

a)

  1. 408 grams

b)

  1. 128 grams

c)

  1. 104 grams

40.
40.

  1. According to the included table, which substance is a better conductor of heat?  Liquid water is the least conductive of all of these materials.

a)

  1. Copper

b)

  1. Basalt

c)

  1. Granite

41.

  1. Determine the amount of energy needed to increase the temperature of 50.0 g of granite from 10 degrees Celsius to 25 degrees Celsius.  The c for granite is 0.79 J/gC.

  3. Use the equation: E = m x c x change in temperature.

a)

  1. 3138 J

b)

  1. 395 J

c)

  1. 592.5 J

42.

  1. If 25,000 J of energy are given to a sample of water which increases 50. degrees.  What is the mass of the water?  The c for water is 4.184 J/gC.

    1. 119.5 g

a)
119.5 g
b)

  1. 29.6 g

c)

200.1 g0.00836 g

43.

  1. What is the specific heat (c) of a substance with a mass of 750 grams if 13,500 J of energy raises the temperature by 45 degrees?

a)

  1. 2.50 J/gC

b)

  1. 67 J/gC

c)

  1. 0.400 J/gC

44.

  1. Particle kinetic energy depends mainly on temperature (higher temperature → higher average kinetic energy).

  2. In which substance do the particles contain more kinetic energy?

a)

  1. Solid ice at 0℃.

b)

  1. Water vapor at 112℃.

c)

  1. Liquid water at 15℃.

45.

Use the Fahrenheit to Celsius formula:

  1. Paper catches fire at about 451 ℉.  What is the temperature in Celsius?

a)

  1. 233℃

b)

  1. 908℃

c)

  1. 506℃

46.

  1. The amount of energy to raise the temperature of one gram of a substance by one degree Celsius is:

a)

  1. Kinetic energy

b)

  1. Boiling point

c)

  1. Specific heat

47.

  1. The transfer of energy is called:

a)

  1. Heat

b)

  1. Kinetic energy

c)

  1. Boiling point

48.

  1. Energy of motion is called:

a)

  1. Heat

b)

  1. Kinetic energy

c)

  1. Boiling point

49-53.
49.

Use this cooling curve to answer the following questions:

  1. Segment AB represents:

a)

  1. cooling a gas

b)

  1. condensing

c)

  1. cooling a liquid

50.

  1. Segment BC represents:

a)

  1. cooling a gas

b)

  1. condensing

c)

  1. cooling a liquid

51.

  1. Segment CD represents:

a)

  1. cooling a gas

b)

  1. condensing

c)

  1. cooling a liquid

52.

  1. Segment DE represents:

a)

  1. cooling a liquid

b)

  1. freezing

c)

  1. cooling a solid

53.

  1. Segment EF represents:

a)

  1. cooling a liquid

b)

  1. freezing

c)

  1. cooling a solid

54-59.
54.

Use the notation below to answer the following questions:

  1. The mass number is:

a)

  1. 59

b)

  1. 28

c)

  1. +2

55.

  1. The number of electrons is:

    4. E = (P - Charge)

a)

  1. 59

b)

  1. 26

c)

  1. +2

56.

  1. The charge is:

a)

  1. 59

b)

  1. 28

c)

  1. +2

57.

  1. The number of protons is:

a)

  1. 59

b)

  1. 28

c)

  1. +2

58.

Neutrons=Mass number−Atomic number

  1. The number of neutrons is:

a)

  1. +2

b)

  1. 26

c)

  1. 31

59.

  1. The number of particles in the nucleus is:

    3. T* he number of particles in the nucleus is the sum of protons + neutrons.

a)

  1. 59

b)

  1. 28

c)

  1. +2

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