TEST - - Chapter 1 Flashcards

1
Q

What is the term for the simplest form of matter that can exist under normal lab conditions?

A

Elements

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2
Q

What is the term for matter that takes both the shape and volume of the container?

A

Gas

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3
Q

What is the term for the study of composition of substances and the changes?

A

Chemistry

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4
Q

What is the term for part of a sample with uniform composition and properties?

A

Phase

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5
Q

What is the term for the starting substances in a chemical reaction?

A

Reactants

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6
Q

What is the term for a physical blend of two or more substances?

A

Mixture

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7
Q

What is the term for a substance that is formed in a chemical reaction?

A

Products

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8
Q

What is another term for a homogeneous mixture?

A

Solution

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9
Q

What is a term for the quality or condition of a substance that can be observed without changing the composition?

A

Physical property

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10
Q

Which is a compound?

Oxygen - Carbon - Water - Hydrogen

A

Water

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11
Q

What kind of change occurs when iron and oxygen combine to form iron oxide?

A

A chemical change occurs

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12
Q

What can help you determine a physical change from a chemical change?

A

Mass is conserved

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13
Q

What are three characteristics of a substance in the liquid state?

A

Able to flow
Definite volume
Not easily compressed

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14
Q

When does a chemical change occur in a piece of wood?

A

When is is burned or decayed

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15
Q

What are some examples of a physical change?

A

Cutting, freezing, condensing, grinding, melting, boiling

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16
Q

What form of matter takes the shape and volume of the container?

A

Gas

17
Q

What are the three forms of matter?

A

solid, liquid and gas

18
Q

Know what the chemical symbol of sodium is?

A

Na

19
Q

What are examples of a chemical change?

A

Food digesting
Rotting meat
Burning wood

20
Q

Know the 4 signs that a chemical reaction has occurred

A

Gas is created
Energy is changed
Precipitate is formed
Color change

21
Q

Be able to state if the following is a homogeneous mixture, heterogeneous mixture, compound or element:

Table sugar
Tap water
Apple juice
Vegetable soup
Table salt
Hydrogen
Marble
A
Table sugar - - compound
Tap water - - homogeneous 
Apple juice - - homogeneous 
Vegetable soup - - heterogeneous 
Table salt - - compound
Hydrogen - - element
Marble - - heterogeneous
22
Q

Be able to state if the following was a chemical change or a physical change:

Dissolving sugar 
Water evaporating
Digesting food
Burning a match
Carving a piece of wood
Spoiled milk
A
Dissolving sugar - - physical
Water evaporating - - physical
Digesting food - - chemical
Burning a match - - chemical
Carving a piece of wood - - physical
Spoiled milk - - chemical
23
Q

How could you separate the rolling mixtures?

Water and alcohol
Sand and salt
Iron fillings and lead

A

Water and alcohol. - - Distillation - - boil the mixture - - vapors form and rises into a tube where the water will turn back into a liquid - - alcohol will remain

Sand and salt - - use water to dissolve the salt - - use a filter paper to remove the sand from the water - - let water evaporate and sand will remain

Iron filling and lead - - use a magnet to pull out the iron fillings

24
Q

Be able to state the Law of Conservation of Mass

A

USE YOU NOTES

25
Q

What is the term for a substance than can only be separated into simpler substances by chemical reaction?

A

Compounds

26
Q

Be able to fill in the matter chart

A

Use your notes

27
Q

Be able to identify elements and their symbols

A

Use your notes

28
Q

In lab - we started with purple powder and added HCl - - the powder fizzes and produced a white substance - - was the purple powder a compound or element?

A

Compound - - it was broken down into a simpler substance - - it is not possible to do with an element