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Junior 2015-2016 > Chemistry Chapter 1 > Flashcards

Chemistry Chapter 1 Flashcards

1
Q

Chemistry is the study of? 3 things

A

Composition, structure, and properties of matter and the changes it undergoes

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2
Q

The branch of chemistry that identifies the composition of materials is _?

A

analytical chemistry

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3
Q

An example of an extensive property is _?

A

mass

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4
Q

One of the chemical properties of water is the fact that it can be

A

decomposed to hydrogen and oxygen

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5
Q

a change in which one or more substances are converted into one or more NEW substances with different properties

A

chemical change

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6
Q

The state of matter in which a material has a definite volume but no definite shape is _.

A

liquid state

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7
Q

Physical means can be used to separated _.

A

mixtures

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8
Q

Group _ in the periodic table contains only nonmetals

A

18

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9
Q

Based on their location on the periodic table, oxygen and selenium have _

A

similar properties

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10
Q

What are properties of metals?

A

Malleability, ductile, good heat conductivity

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11
Q

The two properties that all matter has in common are _ & )

A

mass and volume

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12
Q

The element type that is a good conductor of electricity is a_

A

metal

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13
Q

The smallest unit of an element that has the properties of that element is a _

A

atom

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14
Q

A chemical reaction in which more energy is absorbed than is released is _

A

endothermic

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15
Q

A mixture that has the same proportion of components throughout is called _

A

homogeneous mixture

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16
Q

_ is carried out for the sake of increasing knowledge

A

basic research

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17
Q

A _ is an element that has some characteristics of metals and some characteristics of nonmetals

A

metalliod

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18
Q

when atoms of two or more elements are chemically bonded the substance formed is a

A

compound

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19
Q

A change in which one or more substances are converted into one or more new substances with different properties is a _.

A

chemical change

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20
Q

P or C? melting an ice cube

A

physical

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21
Q

P or C? burning a piece of paper

A

chemical

22
Q

P or C? slicing a loaf of bread

A

physical

23
Q

P or C? decomposing mercury (II) oxide

A

chemical

24
Q

P or C? diluting a salt water solution

A

physical

25
Q

find reactants and products

carbon + oxygen -> carbon dioxide

A

reactant- carbon and oxygen

product: carbon dioxide

26
Q

find reactants and products

mercury (II) oxide -> mercury + oxygen

A

reactants: mercury (II) oxide
products: mercury + oxygen

27
Q

study of carbon- containing compounds

A

organic

28
Q

study of all substances not classified as organic

A

inorganic

29
Q

study of the properties, changes and relationship between energy and matter

A

physical branch

30
Q

the identification of the components and composition of materials

A

analytic branch

31
Q

study of substances and processes occurring in living things

A

biochemmistry

32
Q

use of math and computers to design and predict the properties of new compounds

A

theoretical

33
Q

driven by scientists curiosity or interest in a scientific question
main motivation: expand man’s knowledge

A

basic research

34
Q

designed to solve practical problems

improve the human condition

A

applied research

35
Q

measure of amount of matter

A

mass

36
Q

pure substance composed of atoms of the same atomic # and can’t be decomposed by chemical means

A

element

37
Q

Substance composed of 2 or more elements chemically combined in a definite ratio

A

compounds

38
Q

characteristics defining an entire group of substances or a subgroup of substances; used to identify substances

A

property

39
Q

A characteristics that can be observed or measured without changing the identity of the substance

A

physical

40
Q

relates to a substance’s ability to undergo changes that transform it into different substances

A

chemical

41
Q

a change in a substance that does not involve a change in the identity of the substance

A

physical

42
Q

every sample has the same properties and composition

A

pure substance

43
Q

consists of 2 or more substances physically combined

A

mixtures

44
Q

uniform throughout

A

homogeneous mixture

45
Q

not uniform

A

heterogeneous mixture

46
Q

groups?

A

18, columns

47
Q

peiods?

A

7, horizontal

48
Q

exists as solids liquids or gases, brittle as solids, poor/non-conductors

A

non-metal

49
Q

malleable, ductile, conductivity, conduct electricity, exhibit luster

A

metal

50
Q

all solids, less brittle and more malleable than non-metals, semiconductors of electricity

A

metalloids

Junior 2015-2016 (15 decks)

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