SCIENCE 14
Miss Arvai
Name: ______________________________________
Date: __________________________
Mark: ______ / 65 = ________%

A.
Multiple Choice (30 marks)
Directions: Read each question carefully and select the best response. Circle your answer.
1.
What does this safety symbol mean?
a) oxidizing b) compressed gas c) poisonous and infectious d) flammable and combustible
2.
Material Safety Data Sheets (MSDS) are required for every controlled substance. What information is not found on an MSDS? a) Manufacturer b) first-aid treatment c) handling instructions d) Hazardous Household Product Symbol
3.
Which of the following statements best describes water in the solid state? a) Particles are moving faster than in water vapor. b) Particles of solid water sink in liquid water. c) Particles are densely packed. d) Particles are loosely packed.
4.
Which description of particles is correct? a) Particles in a solid move apart from each other to assume the shape of a container. b) Particles in a gas move more slowly than those in a liquid. c) Particles in a solid just barely vibrate. d) Particles in a liquid do not move.
5.
Which of the following statements does not belong in the particle theory of matter? a) All particles are in motion. b) There are spaces between particles. c) All matter consists of tiny particles. d) The particles in mixtures can be easily separated.
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6.
Which of the following is a pure substance? a) sugar b) gold jewellery (98% gold, 2% silver) c) crunchy peanut butter d) pile of salt and pepper
7.
Which of the following statements is false ? a) Density is a physical property. b) Melting point is a physical property. c) Water exists in three states of matter. d) Adding salt to water will make the boiling temperature increase.
8.
How is the periodic table organized? a) by properties of elements b) by relative mass of elements c) in order of discovery of the elements d) using both properties and relative mass of elements
Use the following diagram to answer questions 9 and 10.
9.
What does the staircase line on the periodic table separate? a) metals from non-metals b) metals from other metals c) elements with similar properties d) non-metals from other non-metals
10.
What elements are found in the shaded area of the periodic table? a) metals b) non-metals c) groups d) periods
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11.
Which of the following properties is NOT a property of metals? a) easily shaped b) probably solid c) shiny d) poor conductor of heat and electricity
12.
A pure substance is made up of only one type of particle. Which of the following items lists pure substances? a) all matter b) elements only c) compounds and mixtures d) compounds and elements
13.
What does a decomposition reaction do? a) combines elements to form a new substance b) breaks a compound into simpler substances c) breaks an element into simpler substances d) turns a nickel into gold
14.
How many atoms are found in a single particle of monosodium glutamate, which has this formula: NaC
5
H
8
NO
4(s)
? a) 4 b) 5 c) 17 d) 19
15.
What elements can be trapped by decomposing water?
a) helium and oxygen b) air and water vapour c) oxygen and hydrogen d) hydrogen and osmium
16.
Which of the following is the best definition of a mechanical mixture?
a) The amount of solute in a solution.
b) The substance in which the solute dissolves.
c) A substance that appears to have more than one type of particle.
d) Two or more substances combined to form a mixture that is uniform throughout.
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17.
Brass is a mixture of 80 percent copper and 20 percent zinc. Which part is the solvent? a) Zinc b) Brass c) Water d) Copper
18.
When a substance will not dissolve in a solvent, how is the substance classified? a) Concentration b) Solubility c) Insoluble d) Soluble
Use the following information to answer questions 19 and 20.
19.
Which solute has the highest solubility at 40°C? a) ammonium chloride b) potassium chlorate c) sodium chlorate d) sodium chloride
20.
Find the point on the graph at which potassium chlorate has a solubility of 210 g/L. What is the temperature of the solution at this point? a) 30°C b) 40°C c) 50°C d) 60°C
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21.
What process is used to collect salt from a salt-water solution? a) mechanical separation b) crystallization c) distillation d) filtration
22.
Which of the following statements describes a concentrated solution? a) contains more solvent b) contains a solute only c) appears to contain two layers d) contains more solute per volume
23.
An unknown sample is tested with litmus paper. The litmus paper turned a greenish-blue colour. What does this mean? a) The sample is a base. b) The sample is an acid. c) The sample is neutral. d) More tests need to be done.
Use the following information to answer question number 24.
The pH scale may be used to differentiate between acids and bases. The pH of four different samples is tested. These are the results:
 pH of solution 1 = 4.7
 pH of solution 2 = 3.2
 pH of solution 3 = 7.0
 pH of solution 4 = 8.9
24.
Which of the following descriptions best matches the results, starting with Solution 1? a) base, base, neutral, acid b) neutral, base, acid, base c) acid, neutral, acid, base d) acid, acid, neutral, base
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25.
Neutralization happens when acids react with bases. Which of the following is an example of neutralization? a) antacids used to treat heartburn b) making hand soap c) washing dishes d) corrosion
26.
Which of the following statements about corrosive substances is correct? a) cure heartburn b) taste sour only c) have a pH near 7.0 d) may cause severe burns to skin
27.
There are unique properties that help distinguish between acids and bases. Which of the following represents a base? a) slippery and tastes bitter b) slippery and tastes sour c) tastes sour and turns red litmus paper blue d) tastes bitter and turns blue litmus paper red
28.
Which of the following flavourings is an acid? a) Salt b) Butter c) Vinegar d) Olive oil
29.
The rust on cars is formed by corrosion. Which of the following statements is correct? a) Rust occurs on copper metal only. b) Rust increases in the presence of carbon dioxide. c) Rust decreases in the presence of oxygen. d) Rust increases in the presence of acid rain.
30.
The air corrodes metals. What part of the air is involved in this reaction? a) Oxygen b) carbon dioxide c) hydrogen d) nitrogen
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B.
Matching (12 marks)
Directions: Match the definitions on the right with the vocabulary terms on the left. Record your answer in the space provided.
31.
_______ Matter a) A mixture that has very little solute per volume of
32.
_______ Metalloids
33.
_______ Periodic table
34.
_______ Solution solution b) Elements that share some properties with metals and some with non-metals c) Separation process in which the desired component is evaporated from the solution and
35.
_______ Crystallization
36.
_______ Distillation
37.
_______ Indicator
38.
_______ Corrosion collected d) A substance that changes colour in the presence of an acid or a base e) Wearing away of materials by a chemical reaction f) A uniform mixture made of two or more
39.
_______ Concentrated
40.
_______ Dilute substances g) Any mixture that has a lot of solute per volume of solution h) Anything that has mass and takes up space i) Separation process in which the solvent is evaporated leaving crystals of solute behind j) The chart on which all elements are organized
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C.
Short Answer (25 marks)
Directions: Read each question carefully and provide your response in the space provided. You may use point form. Answer every question!!!
41.
Use the chart below to:
A.
List the three states of matter.
B.
Describe how the particles move (speed)
C.
Describe the distances between particles.
D.
Provide an example of each.
A.
State
(6 marks)
B.
Speed of particles
C.
Distance between particles
D.
Example
42.
You are given a sample of an unknown element. Describe three tests you would use to determine whether this element is a metal or a non-metal. (3 marks)
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43.
Scientists have used decomposition reactions to see if a substance could be broken down into simpler substances. Discuss how scientists could use this process to see if a substance was a compound or an element . (2 marks)
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44.
Describe the difference between a solution and a mechanical mixture . Give one example of each. (3 marks)
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45.
(a) Explain the terms “soluble” and “insoluble.” (2 marks)
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(b) Using these terms, describe why oil and water do not mix. (1 mark)
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46.
Imagine you are on an outdoor adventure and run out of water. There is a creek nearby but the water is muddy and obviously not safe to drink. In point form, describe a step-by-step procedure you could carry out to make this water safe to drink. (3 marks)
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47.
The properties of a solution will help identify if it is an acid, base, or neutral substance.
Use the table below to identify the properties of acids and bases. (6 marks)
Acids Bases
Litmus paper colour
Litmus paper colour pH range pH range
Taste Taste
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