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Chem110 Study Guide > Chapter 1 Quiz > Flashcards

Chapter 1 Quiz Flashcards

1
Q
  1. Kim chemist proposes that increasing the proportion of butadiene in her glue formulation will make the glue stickier. Her proposal is called a(n)
A

Hypothesis

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2
Q
  1. Which of the following is a physical change?
A

Ice melts at 0degrees Celsius

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3
Q
  1. Which of the following is a chemical property?
A

Sodium reacts with water to form sodium hydroxide.

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4
Q
  1. A mixture of iron, salt and sand can be separated using a magnet, water, a filter and a hot plate. Think about this separation. The separation of this mixture
A

Uses only physical changes or processes

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5
Q
  1. A chemical change always involves a change in the ___ of a piece of matter
A

Composition

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6
Q
  1. The label on a can of sparkling mineral water lists the following ingredients: carbonated water and natural lime flavor. Which one of the following best classified the beverage?
A

Mixture

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7
Q
  1. Pure water is an excellent substance for dissolving many other substances. Given this, the tap water that you drink is best classified as a(n)
A

Mixture

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8
Q
  1. Refined white table sugar is usually derived from either sugar cane or sugar beets. Irrespective of the source of table sugar, after refining it always has the same composition of carbon, hydrogen and oxygen. Sugar is best classified as which one of the following?
A

Compound

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9
Q
  1. A substance that cannot be broken down by chemical means into simpler substances is called a(n)
A

Element

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10
Q
  1. Which of the following statements concerning the relationship between the number of elements and the number of compounds is correct?
A

The number of compounds is much larger than he number of elements.

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11
Q
  1. Which of the following cannot be the chemical symbol for an element?
A

CU

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12
Q
  1. What is the chemical symbol for calcium?
A

Ca

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13
Q
  1. Which of the following represents an element?
A

He

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14
Q
  1. Which of the following represents a compound?
A

CO2

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15
Q
  1. After a yellow solid is dissolved in water, the liquid appears to be uniformly yellow throughout. This yellow liquid is best classified as a(n)
A

Homogeneous mixture

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16
Q
  1. A solution is another name for a(n)
A

Homogeneous mixture

17
Q
  1. In the SI system of measurement, the unit of length is the
A

Meter

18
Q
  1. In the SI system of measurement the unit of mass is the
A

Kilogram

19
Q
  1. How many meters are in 15.0 cm?
A

0.15

20
Q
  1. A tablet contains 250 mg of the active ingredient. This mass may also be expressed as
A

0.250g

21
Q
  1. The prefix centi means ____
A

10^-2

22
Q
  1. The prefix centi means ____
A

1/100

23
Q
  1. The prefix centi means ____
A

0.01

24
Q
  1. Which science is primarily concerned with the study of matter and the changes it undergoes?
A

Chemistry

Chem110 Study Guide (1 decks)

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