Chemistry Chapter 1

Question 1

Chemistry is the study of? 3 things

Answer 1

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

Question 2

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

Answer 2

analytical chemistry

Question 3

An example of an extensive property is _?

Answer 3

mass

Question 4

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

Answer 4

decomposed to hydrogen and oxygen

Question 5

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

Answer 5

chemical change

Question 6

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

Answer 6

liquid state

Question 7

Physical means can be used to separated _.

Answer 7

mixtures

Question 8

Group _ in the periodic table contains only nonmetals

Answer 8

18

Question 9

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

Answer 9

similar properties

Question 10

What are properties of metals?

Answer 10

Malleability, ductile, good heat conductivity

Question 11

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

Answer 11

mass and volume

Question 12

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

Answer 12

metal

Question 13

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

Answer 13

atom

Question 14

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

Answer 14

endothermic

Question 15

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

Answer 15

homogeneous mixture

Question 16

_ is carried out for the sake of increasing knowledge

Answer 16

basic research

Question 17

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

Answer 17

metalliod

Question 18

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

Answer 18

compound

Question 19

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

Answer 19

chemical change

Question 20

P or C? melting an ice cube

Answer 20

physical

Question 21

P or C? burning a piece of paper

Answer 21

chemical

Question 22

P or C? slicing a loaf of bread

Answer 22

physical

Question 23

P or C? decomposing mercury (II) oxide

Answer 23

chemical

Question 24

P or C? diluting a salt water solution

Answer 24

physical

Question 25

find reactants and products | carbon + oxygen -> carbon dioxide

Answer 25

reactant- carbon and oxygen | product: carbon dioxide

Question 26

find reactants and products | mercury (II) oxide -> mercury + oxygen

Answer 26

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

Question 27

study of carbon- containing compounds

Answer 27

organic

Question 28

study of all substances not classified as organic

Answer 28

inorganic

Question 29

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

Answer 29

physical branch

Question 30

the identification of the components and composition of materials

Answer 30

analytic branch

Question 31

study of substances and processes occurring in living things

Answer 31

biochemmistry

Question 32

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

Answer 32

theoretical

Question 33

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

Answer 33

basic research

Question 34

designed to solve practical problems | improve the human condition

Answer 34

applied research

Question 35

measure of amount of matter

Answer 35

mass

Question 36

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

Answer 36

element

Question 37

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

Answer 37

compounds

Question 38

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

Answer 38

property

Question 39

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

Answer 39

physical

Question 40

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

Answer 40

chemical

Question 41

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

Answer 41

physical

Question 42

every sample has the same properties and composition

Answer 42

pure substance

Question 43

consists of 2 or more substances physically combined

Answer 43

mixtures

Question 44

uniform throughout

Answer 44

homogeneous mixture

Question 45

not uniform

Answer 45

heterogeneous mixture

Question 46

groups?

Answer 46

18, columns

Question 47

peiods?

Answer 47

7, horizontal

Question 48

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

Answer 48

non-metal

Question 49

malleable, ductile, conductivity, conduct electricity, exhibit luster

Answer 49

metal

Question 50

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

Answer 50

metalloids