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Chemistry > Chapter 2 - Matter and Change > Flashcards

Chapter 2 - Matter and Change Flashcards

1
Q

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

A

physical property

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2
Q

What is a homogeneous mixture?

A

solution

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3
Q

What is a substance that is formed in a chemical reaction?

A

products

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4
Q

What is a physical blend of 2 or more substances?

A

mixture

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5
Q

What is the starting substances in a chemical reaction?

A

reactants

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6
Q

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

A

phase

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7
Q

What is a study of composition of substances and the changes?

A

chemistry

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8
Q

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

A

gas

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9
Q

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

A

elements

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10
Q

What substance can only be separated into simpler substances by chemical reaction?

A

compounds

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11
Q

What occurs when iron and oxygen combine to form iron oxide (rust)?

A

a chemical change

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12
Q

What distinguishes a physical change from a chemical change?

A

Mass is conserved

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13
Q

Give an example of a compound

A

Water - H2O

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14
Q

Give an example of a chemical change

A

rotting meat

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15
Q

What is the chemical symbol of sodium

A

Na

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16
Q

What is the chemical symbol of potassium

A

K

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17
Q

What is the chemical symbol of silver

A

Ag

18
Q

What are the three states of matter?

A

Solid, liquid, gas

19
Q

What is gas?

A

A form of matter that takes the shape and volume of the container

20
Q

Give some examples of physical changes?

A
  1. cutting and grinding of meat
  2. freezing and melting of water
  3. Boiling and condensing of water
21
Q

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

A

When it decays

22
Q

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

A
  1. able to flow
  2. not easily compressed
  3. definite volume
23
Q

Is dissolving salt in water a chemical change?

A

NO

24
Q

Can ELEMENTS be separated into simpler substances by chemical reactions?

A

NO

25
Q

Does a heterogeneous mixture have 2 or more phases?

A

YES

26
Q

Is color an example of intensive property?

A

NO

27
Q

What are the four signs that a chemical reaction may have occurred?

A
  1. Gas is created
  2. There is a color change
  3. There is an energy change - temperature
  4. A Precipitate forms
28
Q

Be prepared if the following is a homogeneous mixture, heterogeneous mixture, compound or element:

vegetable soup
table sugar
apple juice
tap water
marble
table salt
hydrogen
A 
Vegetable soup - - heterogeneous mixture
table sugar - - compound
apple juice - - homogeneous mixture
tap water - - homogeneous mixture
marble - - heterogeneous mixture
table salt - - compound
hydrogen - - element
29
Q

Be prepared to state if the following is a physical change or a chemical change:

dissolving sugar
water evaporating
spoiled milk
digesting food
burning a match
carving a piece of wood
A 
dissolving sugar - - physical
water evaporating - - physical 
spoiled milk - - chemical
digesting food - - chemical
burning a match - - chemical
carving a piece of wood - - physical
30
Q

Be able to STATE the Law of Conservation of Mass.

A

In a physical or chemical reaction - mass is neither created or destroyed in is CONSERVED!!

31
Q

Tell how you would separate water and alcohol.

A

Distillation - - boil the alcohol and water - the water will turn into a vapor and rise into a tube where is will condenses back into a liquid

32
Q

Tell how you would separate sand and salt

A

Use water to dissolve salt - then use a filter paper to remove the sand from the water - let the water evaporate and the salt will be left behind

33
Q

Tell how you would separate iron filings and lead

A

use a magnet to pull the iron filings out

iron is magnetic and lead is NOT

34
Q

In a lab you started with a purple powder and added HCl - the purple powder fizzed and produced a white substance. Was the purple powder a compound or and element?

A

A compound - - because is was broken down into a simpler substance - it is NOT possible with and element.

35
Q

What is the element of H?

A

Hydrogen

36
Q

What is the symbol of Gold?

A

Au

37
Q

What is the symbol of Lead?

A

Pb

38
Q

What is the element of C?

A

Carbon

39
Q

What is the symbol of Nickel?

A

Ni

40
Q

What is the element of Sb?

A

Antimony

41
Q

Be able to fill in the MATTER chart

A

See Mrs. Krumpelman for help

Chemistry (13 decks)

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