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Chemistry 1 Mr. Slaven > Test 1 > Flashcards

Test 1 Flashcards

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1
Q

What is biochemistry?

A

The study of chemistry in living things

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2
Q

What is physical chemistry?

A

The study of properties and behavior of matter

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3
Q

What is general chemistry?

A

The basic rules of chemistry

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4
Q

What is analytical chemistry?

A

The study of composition in matter

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5
Q

What is organic chemistry?

A

The study if carbon compounds

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6
Q

Is the following change physical or chemical?

A sheet of copper is pounded into a bowl

A

Physical

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7
Q

Is the following change physical or chemical?

A beaker is dropped on the floor and shatters

A

Physical

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8
Q

Is the following change physical or chemical?

Paper is burned

A

Chemical

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9
Q

Is the following change physical or chemical?

Peroxide and bleach are mixed and bubbles appear

A

Chemical

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10
Q

Is the following mixture homogenous or hetergenous?

Oxygen dissolved in water

A

homogenous

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11
Q

Is the following mixture homogenous or hetergenous?

Salt mixed with pepper

A

Heterogenous

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12
Q

Is the following mixture homogenous or hetergenous?

Vegetable soup

A

Heterogenous

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13
Q

Is the following mixture homogenous or hetergenous?

Iced Tea

A

Homogenous

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14
Q

Is the following and element, compound or mixture?

Nitrogen

A

Compound

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15
Q

Is the following and element, compound or mixture?

Sulfur Dioxide(SO2)

A

Compound

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16
Q

Is the following and element, compound or mixture?

Titanium

A

Element

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17
Q

Is the following and element, compound or mixture?

Vinegar

A

mixture

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18
Q

Is the following and element, compound or mixture?

Coffee

A

mixture

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19
Q

Is the following and element, compound or mixture?

Nitric Acid(HNO3)

A

Compound

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20
Q

What is mass?

A

The amount of matter an object contains

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21
Q

What is weight?

A

The pull of gravity on an object

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22
Q

What is a substance?

A

A type of matter that has uniform and definite composition and can only be separated by chemical means

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23
Q

What are elements?

A

The simplest form of all

matter and building blocks for all substances

24
Q

What is a mixture?

A

A type of matter that can be separated hsing physical means

25
Q

What are 2 ways to separate mixtures?

A

Chromatography and distillation

26
Q

What is distillation?

A

Separating mixtures based on boiling point

27
Q

What is chromatography? Under what condition will it not work?

A

The separation of mixtures based on weight, it will not work if the mixture is clear or lacks color

28
Q

Is distillation a physical or chemical separation method? What about chromatography?

A

Both are physical

29
Q

How many significant figures are in the following numbers?

a. 0.0000453
b. 3.4002
c. 10.002
d. 0.000012
e. 10,000
f. 9.02•10^3

A 
a-3
b-5
c-5
d-2
e-1
f-3
30
Q

What is the rule for adding and subtracting significant figures?

A

Least number of decimal places allowed in the numbers added

31
Q

What is the rule for multiplying and dividing significant figures?

A

Least number of significant figures allowed by the number being mutiplied and divided

32
Q

What is 0.000235321 is scientific notation?

A

2.35•E^-4

33
Q

What is 4,375,000 is scientific notation?

A

4.38•E^6

34
Q

What is 234,895,514,023 is scientific notation?

A

2.35•E^11

35
Q

What is 0.00004545 is scientific notation?

A

4.55•E^-5

36
Q

What are electrons?

A

Negatively chaged subatomic particles

37
Q

What is atom?

A

The smallest particle of an element thay still retains the properties of that element

38
Q

What is an atomic number?

A

The number of protons in the nucleus of an atom

39
Q

What is an isotope?

A

Atoms with the same number protons but different number of neutrons

40
Q

What is a neutron?

A

A subatomic particle with no charge

41
Q

What is a nonmetal?

A

Elements with no luster and are poor conductors of electricity

42
Q

What is atomic mass?

A

The total number of protons and neutrons in the nucleus of an atom

43
Q

What is a proton?

A

A positively charged subatomic particle

44
Q

How do you calculate the average mass of an atom?

A

(Relative Abundance•Mass)+(Relative Abundance•Mass)+…

Add one parenthesis to the equation for however many numbers you have

45
Q

What are the characteristics of metals?

A
  1. Luster
  2. Ductile
  3. Malleable
  4. Good conductors
46
Q

What are characteristics of nonmetals?

A
  1. Brittle
  2. Not good conductors
  3. Many are gases
  4. Dull
47
Q

What are characteristics of metalloids?

A

Metalloids have characteristics of metals and nonmetals based on conditions, usually temperature

48
Q

What were the major contributions of Marie Curie to our knowledge of atomic structure?

A

Characterized radioactivity

49
Q

What were the major contributions of Earnest Rtherford to our knowledge of atomic structure?

A

Nuclear model, showed atoms have a nucleus in the middle and are mostly empty space

50
Q

What were the major contributions of J.J. Thompson to or knowledge of atomic structure?

A

Discovered electrons, plum-pudding model

51
Q

What were the major contributions of Neils Bohr to our knowledge of atomic structure?

A

Bohr model, electron theory

52
Q

What were the major contributions of John Dalton to our knowledge of the atomic structure?

A

Atomic theory

53
Q

What is the atomic theory?(all 4 parts)

A
  1. All elements are made of atoms
  2. Atoms of the same element are identical
  3. Atoms can not be created or destoryed
  4. Compounds form form atoms in special ratios
54
Q

What is an element?

A

Substances that can be decomposed into simpler substances by physical or chemical means and are on the periodic table

55
Q

What is a mixture?

A

Matter that has variable composition amd can be separated using physical means

56
Q

What are the two types of mixtures?

A
  1. Homogenous- Have visibly indistinguishable parts

2. Hetergenous- Have visibly distinguishable parts

57
Q

What is a compound?

A

A substances with constant composition that can be broken down into elements by means of chemical processess

Chemistry 1 Mr. Slaven (13 decks)

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