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Chemistry > Chemistry Exam 1 > Flashcards

Chemistry Exam 1 Flashcards

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0
Q

The measure of the quantity of matter

A

Mass

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1
Q

A substance is a broken down chemically into similar substances

A

Compound

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2
Q

The method used by scientists to clearly present the Certainty uncertainty of measure

A

Significant figures

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3
Q

A measure of the force of gravity upon An object

A

Weight

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4
Q

The state of matter that is characterized by particles that are closely packed together But capable of moving

A

Liquid

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5
Q

the energy possessed by matter due to its motion

A

Kinetic energy

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6
Q

Two or more elements that are physically mixed but are not chemically combined

A

Mixture

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7
Q

The smallest particle of an element

A

Atom

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8
Q

The point at which a liquid changes into a gas

A

Boiling point

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9
Q

The mass per unit volume of a substance

A

Density

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10
Q

The principle that every system left to itself will turn towards disorder

A

Second law thermodynamics

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11
Q

Numbers that result from counting

A

Exact numbers

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12
Q

The state of matter that is compressible

A

Gas

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13
Q

A reaction were the product has a higher heat energy content than the reactants

A

Endothermic reaction

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14
Q

The law that energy can be neither created nor destroyed

A

The law of conservation of Energy or the first law of thermodynamics

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15
Q

Who propose a planetary model of the Atom

A

Rutherford

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16
Q

Who propose the plum pudding model of the Atom

A

JJ Thompson

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17
Q

Sir James Chadwick is credited for finding which subatomic particle

A

The neutron

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18
Q

What do we call a positively or negatively charged Adam

A

Ion

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19
Q

Adam of the same element but differs in its mass number

A

Isotope

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20
Q

For element what is considered to be simply an average of all the masses of the isotopes of that particular atom

A

Atomic mass

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21
Q

A subatomic particle that has a negative charge

A

Electron

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22
Q

The scientist that discovered cathode rays

A

Julius Plucker

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23
Q

The element most found in the universe

A

Hydrogen

24
Q

A method of separating a complex mixture by color

A

Chromatography

25
Q

A property that can be described to the object simply by looking at it

A

Physical property

26
Q

The signs of a chemical change

A

The changing color formation of a precipitant, formation of a gas, The absorption of heat

27
Q

Homogeneous

A

The same throughout a mixture

28
Q

The cutting of wood

A

Physical

29
Q

The cooking of meat

A

Chemical

30
Q

what is defined as a proton or neutron

A

Nucleon

31
Q

Texture

A

Physical

32
Q

Rust resistant

A

Chemical

33
Q

What is The atomic number of any element

A

The number of protons in the element

34
Q

What is the mass number

A

The sum of the protons and neutrons for that element

35
Q

The name given to a negatively charged ion

A

Anion

36
Q

A homogeneous Part of a system that is in contact with but physically distinct from another part of the system testing

A

A phase

37
Q

The name of the Theory In which protons and neutrons are said Theoretically Said to be composed of smaller Particles

A

Quark theory

38
Q

The central part of an Adam I contains the protons and neutrons

A

The nucleus

39
Q

Subatomic particle found in the nucleus which is positive

A

Protons

40
Q

The process of purifying a liquid by By boiling it and collecting the vapor

A

Distillation

41
Q

The Instrument that is used to determine the isotopes present in an element in their abundance in their masses

A

A mass spectrometer

42
Q

What is the numerical value of Avogadro’s number

A

6.022×10^23rd

43
Q

A symbolic representation which specifies the elements present and a compound

A

The Chemical formula

44
Q

What is the mass in grams of one mole of a substance

A

Molar mass

45
Q

What is the smallest particle of a per substance Which possesses a unique set of properties And is capable of independent existence

A

Molecule

46
Q

What is Avogadro’s number of anything

A

One mole

47
Q

What is the relationship between a mole and Avogadro’s number

A

Avogadro’s number is one mole of a substance

48
Q

Why are empirical formulas Not practical to identify a Molecular substance

A

Because it won’t give you all the information you need

49
Q

What is another name for the empirical Formula

A

The formula unit

50
Q

The formula of an actual molecule that is used represent molecular compounds

A

The molecular formula

51
Q

Which type of Reaction Involves one substance breaking down into 2 or more substances

A

Decomposition

52
Q

Which specific type of decomposition reaction as a result of a product or react being heated

A

Thermal decomposition

53
Q

What reaction involves interchanging of positive and negative ions

A

Double displacement

54
Q

A chemical equation that shows Only those items that react and ignores the spectator ions

A

Net ionic equations

55
Q

The reactant that determines the amount of product that can be made

A

Limiting reactants

56
Q

The law that says the sum of the masses of the products is equal to the sum of the masses of the reactants

A

The law of conservation of mass

57
Q

Another name for combination reaction

A

A synthesis reaction

Chemistry (11 decks)

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