Chemistry Ch. 1 Flashcards


Set Details Share
created 11 years ago by JLynnB143
316 views
PPT
Grade levels:
College: Second year
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

Chemistry

the study of matter and the changes that matter undergoes.

2

Matter

anything that has mass and occupies space.

3

Gas
Liquid
Solid

3 State (phases) of Matter

There are also pure materials and mixtures for each of these forms of matter.

4

Atoms

are the building blocks of matter

5

Element

Each _____ is made of the same kind of atom

6

Compound

is made of two ore more different kinds of elements

7

substance
mixture of subtances

Chemists classify matter as either a _______ or a ______ of _______.

8

substance

a form of matter that has definite composition and distinct properties.

9

substances

salt (sodium chloride), iron, water, mercury, carbon dioxide, and oxygen are examples of ______

10

appearance, smell, taste

Substances differ from one another in composition and may be identified by ______, ______, ______, and other properties.

11

mixture

physical combination of two or more substances.

12

homogenous mixtures
heterogenous mixtures

2 types of Mixtures

13

homogenous mixture

a mixture that is uniform throughout

14

homegenous mixture

also called a solution

15

homogenous mixture

seawater, apple juice, sugar water, vodka, brass, air are examples of

16

heterogenous mixture

a mixture that is NOT uniform throughout

17

heterogenous mixtures

trail mix, chicken noodle soup, carbonated drink, salt water from a sandy beach, multi-grain flour, fruit salad, granite, tomato juice, sand are examples of

18

Physical Properties

2 properties or matter are

19

Physical Property

a property of Matter

Can be observed without changing a substance into another substance.

20

Boiling point, density, mass, volume, etc.
pulverizing

Give examples of physical properties of matter

21

Chemical Property

a property of Matter

Can only be observed when a substance is changed into another substance.

22

Flammability, corrosiveness, reactivity with acid, etc.

Give examples of chemical properties of matter

23

Intensive Properties
Extensive Properties

2 Types of matter

24

Intensive Properties

Are INDEPENDENT of the amount of the substance that is present.

25

Density, boiling point, color, etc.

Give exampleas of Intensive Properties

26

Extensive Properties

Depend upon the amount of the substance present.

27

Mass, volume, energy, etc.

Give exampleas of Extensive Properties

28

Physical Changes
Chemical Changes

Types of Changes

29

DO NOT

temperature-

Physical Changes

These are the changes in matter that ______ ______ change the composition of a subtance

Examples, Changes of state, ______, volume, etc

30

NEW

Combustion
Decomposition

Physical Changes

Chemical changes result in ______ substances.

Eg: ______, oxidation, ______, etc.

31

solid, liquid or gas

changing

Classification of Matter

All substances can, in principle, exist as a ______, ______, or ______.

We convert a substance from one state to another without _______ the identity of the substance.

32

Solid

Do not conform to the shape of their container

Holds Shape

Fixed Volume

33

Liquid

Conforms to the shape of their container, but they have their own volume.

Shape of container

Free Surface

Fixed Volume

34

Gas

Assume both shape and volume of their container

Shape of Container

Volume of Container

35

mixture

filtration

A ______ can be separated by physical means into its components without changing the identities of the components.

In ______, solid substances are separated from liquids and solutions.

36

solids

Distillation

You can also extract ______ from solid mixtures using their properties:
The iron fillings are atracted by the magnet and they are separated from the sand mixture.

______ uses differences in the boiling points of substances to separate a homogeneous mixture into its components.

37

disperse

interact

containers

density

Gas
the most ______ state of matter
the particles are far away from each other, they don’t closely ______.
Gases take the form of their ______, so basically they fill up the entire space of the container.
In an idealized gas, the particles don’t interact with each other, since they are assumed to be far away from each other due to the low density of gaseous samples.
Gases are compressible
eg: CO2, CO, O2

38

Temperature
Pressure
Volume

3 Physical Properties of GASES to consider in order to describe gas samples

All related to the ideal gas law

39

Kelvin or Celcius

Temperature (measured in ______ or ______) – it is important to know a gaseous sample’s temperature, because this can change some of the other properties as well.

40

Torr

Pressure (measured in ______ or other units) - this can vary inversely proportional to the volume (the more pressurized a gas, the higher the pressure – the smaller the volume it takes).

41

liters, gallons

Volume (measured in ______, ______etc.) - this is the same as the volume of the container that contains the gas at a specific pressure and temperature.

42

closer

further

space (20)

Liquid
the particles are ______ together than in gases, but ______ away than solids
Liquids also take the form of their containers, but they don’t fill up the entire _____ of the container
retain their volume
shape is not retained
nearly incompressible