Terminology Flashcards Preview

Abi Science 2016 > Terminology > Flashcards

Flashcards in Terminology Deck (87):
1

What is the definition of a compound?

Substance made up of two or more elements that are chemically combined in a fixed ratio

2

What is the definition of di…?

Prefix that means two

3

What is the definition of an atomic number?

Number that indicates the number of protons in the nucleus of an atom

6

What is the definition of a mass number?

Total number of protons and neutrons in an atomic nucleus

7

What is the definition of an element?

Simple chemical substance that consists of atoms of one type

8

What is the definition of mon(o)…?

Prefix that means one

9

What is the definition of a metal?

Shiny element that is a good conductor of heat and electricity
Malleable
Ductile

10

What is the definition of a ratio?

Relationship between two numbers that show how much greater one amount is compared to the other

11

What is the definition of tri …?

Prefix that means three

12

What is the definition of a non-metal?

Dull, brittle, non-magnetic element that does not conduct heat or electricity

17

What is the definition of a semi-metal?

Element that has properties of both a metal and a non-metal

18

What is the definition of a symbol?

Letter(s), number(s) or sign(s) used to represent something

19

What is the definition of the Periodic Table of Elements?

Table that lists all the known elements in groups

20

What are the three types of variables?

Independent
Dependent
Controlled

21

What is the definition of an independent variable?

It is the variable that is chosen by the experimenter
It does not depend on the outcome of the experiment
It is plotted on the x-axis

22

What is the definition of a dependent variable?

It is the measurable outcome of the experiment
It is plotted on the y-axis

23

What is the definition of a controlled variable?

These are the variables that could inadvertently influence the result of an experiment. They need to be controlled to ensure a fair test

24

What is the definition of a hypothesis?

It is the experimenter's prediction of the outcome of an experiment
An hypothesis includes the dependent and independent variable
It is a statement

25

What is the definition of a fair test?

It is an experiment where all the variables that could influence the experiment (except for the independent variable) are controlled.

26

What is the definition of accuracy?

It refers to how close the outcome of an experiment was to a known scientific variable.

27

What is the definition of precision?

When the results of an experiment have a limited range

28

What is the definition of reliability?

It is when all of the results of an experiment are similar. The experiment can be repeated by anyone with similar outcomes.

29

What is the definition of trustworthiness?

It is when the source of your data is reliable.

30

What is the definition of prejudice?

It is when a person will manipulate their data to suit their hypothesis.

31

What are the three types of variables?

Independent
Dependent
Controlled

32

What is the definition of an independent variable?

It is the variable that is chosen by the experimenter
It does not depend on the outcome of the experiment
It is plotted on the x-axis

33

What is the definition of a dependent variable?

It is the measurable outcome of the experiment
It is plotted on the y-axis

34

What is the definition of a controlled variable?

These are the variables that could inadvertently influence the result of an experiment. They need to be controlled to ensure a fair test

35

What is the definition of a hypothesis?

It is the experimenter's prediction of the outcome of an experiment
An hypothesis includes the dependent and independent variable
It is a statement

36

What is the definition of a fair test?

It is an experiment where all the variables that could influence the experiment (except for the independent variable) are controlled.

37

What is the definition of accuracy?

It refers to how close the outcome of an experiment was to a known scientific variable.

38

What is the definition of precision?

When the results of an experiment have a limited range

39

What is the definition of reliability?

It is when all of the results of an experiment are similar. The experiment can be repeated by anyone with similar outcomes.

40

What is the definition of trustworthiness?

It is when the source of your data is reliable.

41

What is the definition of prejudice?

It is when a person will manipulate their data to suit their hypothesis.

42

What is the definition of a chemical reaction?

Event when elements and/compounds combine to form one or more new substances

43

What is the definition of a model?

a representation of a real object that is really small

44

What is the definition of a reactant?

Substance that is present at the start of a chemical reaction

45

What is the definition of a product?

Substance formed by a chemical reaction

46

What is the definition of a chemical equation?

Equation using the scientific symbols of substances involved in a reaction

47

What is the definition of a subscript?

Smaller letter/figure that appears at the bottom of a page

48

What is the definition of a balanced chemical equation?

chemical equation where the number and type of atoms on the left of the equation is the same as the number and type on the right

49

What is the definition of an oxide?

A compound formed during a chemical reaction between oxygen and one other element

50

What is the definition of a combustion reaction?

A rapid reaction that occurs in a chemical reaction with oxygen that produces light and heat

51

What is the definition of iron oxide?

Product formed as the result of the reaction between iron and oxygen

52

What is the definition of magnesium oxide?

Product formed as a result of the reaction between oxygen and magnesium

53

What is the definition of rust?

Reddish-brown coating that forms on iron
Orange-brown powdery solid formed by the reaction of oxygen and iron in the presence of water

54

What is the definition of a corrosion process?

Effect of metal being attacked by air, water and other substances

55

What is the definition of electroplating?

Process whereby an electric current run through iron/steel is used to coat the iron/steel with another less corrosive metal

56

What is the definition of galvanise?

Process used to cover iron with zinc

57

What is the definition of a patina?

A layer of oxide on a metal

58

What is the definition of a catalyst?

Something that speeds up a reaction, but remains unchanged at the end of the reaction

59

What is the definition of a non-metal oxide?

Product of the reaction between oxygen and non-metals

60

What is the definition of carbon?

Common non-metal element

61

What is the definition of oxygen?

Gas in the atmosphere that living things need for cell respiration

62

What is the definition of carbon dioxide?

Gas produced when animals breathe
Carbon is burned in the air or when living matter decays
One of the natural greenhouse gases

63

What is the definition of sulfur?

Solid at room temperature
A non-metal that is yellow in colour

64

What is the definition of sulfur dioxide?

A product of the reaction between oxygen and sulfur

65

What is the definition of phosphorus?

A reactive solid non-metal

66

What is the definition of phosphorous pentoxide?

Chemical compound with formula P4O10
A white powder

67

What is the definition of an acid?

Substance with a pH value lower than 7

68

What is the definition of a base?

Substance with a pH value higher that 7

69

What is the definition of a neutral?

Solution with a pH value of 7

70

What is the definition of a pH scale?

Number that indicates how acidic or basic a solution is

71

What is the definition of an indicator?

Chemical used to determine whether a solution is acidic, alkaline or neutral

72

What is the definition of litmus paper?

Red or blue paper
Used as an indicator in a laboratory

73

What is the definition of Phenolphthalein?

Substance used to test the pH value of a solution

74

What is the definition of bromothymol?

Substance used to test the pH of a liquid or solution

75

What is the definition of a universal indicator?

Used to test the pH value of a substance

76

What is the definition of red cabbage water?

homemade substance used to test the pH value of a solution

77

What is the definition of red onion water?

Homemade substance used to test the pH value of a solution

78

What is turmeric water?

Homemade substance used to test the pH value of a substance

79

What is the definition of a neutralisation reaction?

Reaction that takes place when an acid reacts with a base

80

What is the definition of sulfuric acid?

H2SO4
A strong acid

81

What is the definition of hydrochloric acid?

Substance that AIDS digestion in the stomach

82

What is the definition of oxygen?

O2
Gas in the atmosphere that living things need for cell respiration

83

What is the definition of a strong base?

14

84

What is the definition of a weak base?

7,1

85

What is the definition of a strong acid?

1

86

What is the definition of a weak acid?

6.9

87

What is the definition of a neutralisation reaction?

When enough base is added to a base or vice versa so that the pH level becomes 7(neutral)

88

What is the definition of a chemical formula?

Letters and numbers which indicate the type and ratio of elements in a compound

89

What is the definition of a word equation?

Names of the elements and compounds showing the reactants and products in a chemical reaction

90

What is the definition of a metal oxide?

A new compound base formed when a metal reacts with oxygen

91

What is the definition of a non-metal oxide?

A new acidic compound which is formed when a non-metal reacts with oxygen

92

What is the definition of greasing?

A method for preventing rust and providing lubrication for moving metal parts such as metal gears in an engine

93

What is the definition of a Newton?

The force needed to accelerate 1 kg of mass at 1 m per s squared