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Chemistry comp 6th

Total questions: 89

Worksheet time: 45mins

Name
Class
Date
1.

List the three routes of entry for a substance to get into your body

a)

Inhalation, ingestion, skin absorption

b)

Flammable, ingestion, Corrosive

c)

absorption, toxic, Corrosive

d)

Inhalation, toxic, Corrosive

2.

Explain how and when the following safety equipment would be used:

Fire Extinguisher:

a)

Wash toxic or corrosive chemical off skin and face

b)

Extinguish fire on person

c)

Extinguish fire caused by flammable substances

d)

Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals

3.

Explain how and when the following safety equipment would be used:

Fire Blanket:

a)

Wash toxic or corrosive chemical off skin and face

b)

Extinguish fire on person

c)

Extinguish fire caused by flammable substances

d)

Exhaust toxic fumes produced by chemicals

4.

Explain how and when the following safety equipment would be used:

Safety Shower/ Eye Wash:

a)

Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals

b)

Wash toxic or corrosive chemical off skin and face

c)

Exhaust toxic fumes produced by chemicals

d)

Flammable, toxic, Corrosive

5.

Explain how and when the following safety equipment would be used:

Lab Sink:

a)

Exhaust toxic fumes produced by chemicals

b)

Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals

c)

Extinguish fire caused by flammable substances

d)

Extinguish fire on person

6.

Explain how and when the following safety equipment would be used:

Fume Hood:

a)

Exhaust toxic fumes produced by chemicals

b)

Flammable, toxic, Corrosive

c)

Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals

d)

Extinguish fire caused by flammable substances

7.

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip

a)

Independent = paper clips (#)

Dependent = distance (cm) plane flew

Control = same size plane


Clips | distance

b)

Independent = distance (cm) plane flew

Dependent = paper clips (#)

Control = same size plane


Clips | distance

c)

Independent = paper clips (#)

Dependent = same size plane

Control = distance (cm) plane flew


Clips | distance

d)

Independent = same size plane

Dependent = distance (cm) plane flew

Control = paper clips (#)


Clips | distance

8.

Identify the name and symbol of the SI Unit for

Length.

a)

Meter m

b)

Kilometer Kg

c)

Gram g

d)

Second s

9.

Identify the name and symbol of the SI Unit for

Mass.

a)

meter m

b)

Kilogram kg

c)

Mole s

d)

Kelvin K

10.

Identify the name and symbol of the SI Unit for

Amount of Substance.

a)

Kelvin K

b)

Mole mol

c)

meter m

d)

Second s

11.

Identify the name and symbol of the SI Unit for

Time.

a)

mole mol

b)

Kilogram kg

c)

Seconds s

d)

Kelvin K

12.

Identify the name and symbol of the SI Unit for

Temperature.

a)

Kilogram kg

b)

meter m

c)

Second s

d)

Kelvin K

13.

Name the equipment / tool and describe their functions.

a)

Erlenmeyer flask, mixing

b)

Bunsen burner, melting, heating

c)

balance, measurement (mass)

d)

beaker, mixing

14.

Name the equipment / tool and describe their functions.

a)

Erlenmeyer flask, mixing

b)

Bunsen burner, melting, heating

c)

balance, measurement (mass)

d)

volumetric flask, measurement (volume)

15.

Name the equipment / tool and describe their functions.

a)

volumetric flask, measurement (volume)

b)

Graduated cylinder, measurement (volume)

c)

balance, measurement (mass)

d)

breaker, mixing

16.

Name the equipment / tool and describe their functions.

a)

Volumetric flask, measurement (volume)

b)

beaker, mixing

c)

Erlenmeyer flask, mixing

d)

balance, measurement (mass)

17.

Name the equipment / tool and describe their functions.

a)

Graduated cylinder, measurement (volume)

b)

Volumetric flask, measurement (volume)

c)

beaker, mixing

d)

Erlenmeyer flask, mixing

18.

Name the equipment / tool and describe their functions.

a)

Erlenmeyer flask, mixing

b)

Graduated cylinder, measurement (volume)

c)

balance, measurement (volume)

d)

beaker, mixing

19.

Identify hazard symbol:

a)

toxic

b)

corrosive

c)

flammable

d)

fire

20.

Identify hazard symbol:

a)

flammable

b)

toxic

c)

corrosive

d)

all above

21.

Identify hazard symbol:

a)

toxic

b)

flammable

c)

corrosive

d)

none

22.

Define Accuracy

a)

closeness to actual or true value

b)

closeness to actual or repeated measurements

c)

closeness of measurements or repeated measurement of similar value

d)

repeated measurement of similar value

23.

Define Precision:

a)

closeness of to actual or true value

b)

repeated measurement of similar value

c)

closeness of to actual

d)

closeness of measurements or repeated measurement of similar value

24.

A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either


32.1 g, 32.2g, 31.9 g

a)

accurate, precise, both

b)

either

c)

precise, accurate

d)

precise

25.

A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either


38.3 g, 67.5g, 98.0 g

a)

accurate, precise, both

b)

neither

c)

accurate

d)

precise

26.

A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either


78.5 g, 78.6 g, 78.7 g

a)

accurate, precise, both

b)

neither

c)

accurate

d)

precise

27.

convert 44.3 L to mL

a)

443 ml

b)

443,000 ml

c)

44,300 ml

d)

4430 ml

28.

Convert 16.18 cg to g

a)

1.618g

b)

1618g

c)

16.18g

d)

16180g

29.

Convert 3,500 kg to g

a)

35,000 g

b)

35,000,000 g

c)

3,500,000 g

d)

35 g

30.

m = 12.5 g, V = 7.93 mL. Find the density

a)

16.18 g/mL

b)

1.58 g/mL

c)

9.8 g/mL

d)

15.8 g/mL

31.

d = 5.88 g/cm3 and V = 54.1 cm3 . Find mass

a)

31.811 g

b)

3.18 g

c)

318.11 g

d)

318 g

32.

m = 78 kg and d = 6.31 kg/L . Find volume

a)

1.2 L

b)

12.36 kg/L

c)

12.36 L

d)

123.6 kg

33.

Kenzie measured 68,5 mL of water in a graduated cylinder. She put a piece of metal with a mass of 19.78 g into the graduated cylinder. She read the volume of he water with the metal in it as 79.3 mL. What is the density of the metal?

a)

0.8 mL

b)

24.73 g/mL

c)

24 g/mL

d)

8 mL

34.

There are five substances (A, B, C, D, and E) making up a heterogeneous mixture in a beaker. Based on the densities in the table, what is the order of the substances in the beaker from bottom to the top?

a)

Top: E A C B D (1, 2, 3, 4, 5) Bottom: D B C A E( 5, 4, 3, 2, 1)

b)

Top: C A B E D (2, 5, 3, 2, 1) Bottom: B C E D A (5, 3, 4, 2, 1)

c)

Top: B C E D A (5, 3, 4, 2, 1) Bottom: A B C D E (1, 2, 3, 4, 5)

d)

Top: A B C D E (1, 2, 3, 4, 5) Bottom: D B C A E( 5, 4, 3, 2, 1)

35.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


F2

a)

element (E)

b)

compound (C)

c)

Homogeneous (HM)

d)

heterogeneous (HEM)

36.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Koolaid

a)

heterogeneous (HEM)

b)

Homogeneous (HM)

c)

compound (C)

d)

element (E)

37.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Selenium

a)

element (E)

b)

heterogeneous (HEM)

c)

compound (C)

d)

Homogeneous (HM)

38.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Muddy water

a)

compound (C)

b)

Homogeneous (HM)

c)

element (E)

d)

heterogeneous (HEM)

39.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Sugar

a)

element (E)

b)

compound (C

c)

(HM)heterogeneous (HEM)

d)

heterogeneous (HEM)

40.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Chocolate chip ice cream

a)

heterogeneous (HEM)

b)

Homogeneous (HM)

c)

compound (C)

d)

element (E)

41.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Air

a)

element (E)

b)

compound (C)

c)

Homogeneous (HM)

d)

heterogeneous (HEM)

42.

Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.


Iron in water

a)

element (E)

b)

compound (C)

c)

Homogeneous (HM)

d)

heterogeneous (HEM)

43.

If solid titanium metal is heated to a liquid, this phase change is called ______________

a)

liquid

b)

melting

c)

solid

d)

gas

44.

Substances that are in the _____________ phase have particles that are moving rapidly and will compress or expand to fit the container they are in.

a)

melting

b)

gas

c)

liquid

d)

sublimation

45.

If a bottle of liquid acetone if left open, some of the acetone will evaporate into the ____________ phase.

a)

freezing

b)

solid

c)

gas

d)

melting

46.

Substances that are in the ___________ phase have a definite volume but no definite shape and the particles slide over each other.

a)

solid

b)

liquid

c)

gas

d)

sublimation

47.

When nitrogen is cooled from a _________ to a liquid, this is called condensation.

a)

gas

b)

solid

c)

sublimation

d)

liquid

48.

When carbon dioxide changes from a solid to a gas, this called _____

a)

gas

b)

liquid

c)

sublimation

d)

solid

49.

Substances that are in the _____________ phase have a definite volume and definite shape and the particles are barely moving.

a)

sublimation

b)

solid

c)

gas

d)

liquid

50.

when water changes from steam directly to ice, this is called ____________

a)

liquid

b)

solid

c)

deposition or desublimation

d)

freezing

51.

If molten (liquid) gold is cooled to solid gold, this phase change is called __________

a)

deposition

b)

sublimation

c)

melting

d)

freezing

52.

Identify the following as a chemical (C) or physical property (P)


melting point

a)

chemical (C)

b)

physical property (P)

53.

Identify the following as a chemical (C) or physical property (P)


conductivity

a)

chemical (C)

b)

physical property (P)

54.

Identify the following as a chemical (C) or physical property (P)


volume

a)

physical property (P)

b)

chemical (C)

55.

Identify the following as a chemical (C) or physical property (P)


color

a)

chemical (C)

b)

physical property (P)

56.

Identify the following as a chemical (C) or physical property (P)


reacts with acid

a)

chemical (C)

b)

physical property (P)

57.

Identify the following as a chemical (C) or physical property (P)


density

a)

chemical (C)

b)

physical property (P)

58.

list 4 signs or ways to detect that a chemical change has occurred.

a)

gas bubbles

b)

color changes

c)

precipitate

d)

sound, light, heat, new substance formed

e)

all above

59.

Identify whether the following is a physical (P) or a chemical (C) change.


Melting lead

a)

physical (P)

b)

chemical (C)

60.

Identify whether the following is a physical (P) or a chemical (C) change.


Grinding sugar

a)

physical (P)

b)

chemical (C)

61.

Identify whether the following is a physical (P) or a chemical (C) change.


Digestion of food

a)

physical (P)

b)

chemical (C)

62.

Identify whether the following is a physical (P) or a chemical (C) change.


Evaporating bromine

a)

physical (P)

b)

chemical (C)

63.

Identify whether the following is a physical (P) or a chemical (C) change.


Burning gasoline

a)

physical (P)

b)

chemical (C)

64.

Identify whether the following is a physical (P) or a chemical (C) change.


Reacting sodium in water

a)

physical (P)

b)

chemical (C)

65.

Identify whether the following is a physical (P) or a chemical (C) change.


tearing aluminum foil

a)

physical (P)

b)

chemical (C)

66.

Who thought atoms were small, hard, and "uncuttable"?

a)

Thomson

b)

Rutherford

c)

Dalton, Democritus

67.

Where are electrons located according to modern atomic theory?

a)

sky

b)

cloud

c)

electron cloud

d)

electron sky

68.

who performed the cathode-ray tube experiment?

a)

Dalton

b)

Democritus

c)

Thomson

d)

Rutherford

69.

who performed the gold foil experiment?

a)

Dalton

b)

Democritus

c)

Rutherford

d)

Thomson

70.

Which theorists draw the atomic models below:

a)

JJ. Thomson

b)

Dalton

c)

Ernest Rutherford

71.

Which theorists draw the atomic models below:

a)

Dalton

b)

JJ.Thomson

c)

Ernest Rutherford

72.

Which theorists draw the atomic models below:

a)

Dalton

b)

Democritus

c)

Ernest Rutherford

d)

JJ. Thomson

73.

Identify the mass, charge, and location of each subatomic particle.

a)

Proton

b)

Neutron

c)

Electron

d)

none

74.

Identify the mass, charge, and location of each subatomic particle.

a)

Proton

b)

Neutron

c)

Electron

75.

Identify the mass, charge, and location of each subatomic particle.

a)

Proton

b)

Neutron

c)

Electron

76.

Atoms that have the same number of protons and electrons have no charge and are said to be ____________

a)

masses

b)

anions

c)

neutral

d)

neutrons

e)

atoms

77.

Atoms that have lost or gained electrons and have a charge are called _____

a)

atoms

b)

cations

c)

electrons

d)

ion

e)

neutral

78.

If an atom has more protons than ________ , then it has a positive charge.

a)

protons

b)

anion

c)

electrons

d)

isotopes

e)

radioactive

79.

If an atom has more _____ than ______, then it has a negative charge.

a)

electrons, ion

b)

masses, protons

c)

electrons, protons

d)

neutrons, neutral

80.

Ions that have a positive charge are called ___, and ions that have a negative charge are called ____.

a)

electrons, protons

b)

cation, anions

c)

masses, neutrons

d)

neutral, neutrons

81.

Atoms of the same element all have the same number of ____

a)

isotopes

b)

protons

c)

elections

d)

neutrons

82.

Atoms of the same element that have different numbers of neutrons are called ____.

a)

neutrons

b)

masses

c)

isotopes

d)

anion

83.

Since these atoms have different numbers of neutrons, they also have different atomic ____, ____ help to stabilize the nucleus; therefore, isotopes of a particular element vary in the stability of their nuclei.

a)

electrons, protons

b)

anion, cation

c)

neutrons, radioactive

d)

masses, neutrons

84.

This results in some isotopes being more or less _______

a)

isotopes

b)

radioactive

c)

neutral

d)

protons

85.

Which element is in group 3 and in period 5?

a)

Y

b)

Re

c)

Tc

d)

Ga

86.

which element 75 protons?

a)

Y

b)

Zn

c)

Re

d)

Tc

87.

which element has an average atomic mass of 65.39 amu?

a)

Re

b)

Zn

c)

Tc

d)

Ga

88.

which element is in period 4 and in group 7?

a)

Re

b)

Zn

c)

Tc

d)

Ga

89.

which element has 4 electron shells and is in group 13?

a)

Zn

b)

Ga

c)

Tc

d)

Re