Chemistry: Discovering Chemistry

HideShow resource information
  • Created by: faholly21
  • Created on: 08-06-15 14:15
Actual Yield
The actual amount of product obtained from a chemical reaction.
1 of 95
Alkali Metal
Element in Group 1
2 of 95
Negatively Charged ion
3 of 95
Aqueous Solution
Mixture formed when a substance is dissolved in water.
4 of 95
The smallest neutral part of an element that can take part in reactions.
5 of 95
Atomic number
Number of protons in the nucleus ( also the number of electrons in the shells)
6 of 95
Barium Meal
Drink containing barium sulfate so that parts of the digestive system shows up on an Xray
7 of 95
Boiling Point
Temperature at which a substance changes from a liquid to a gas
8 of 95
By products
any products produced in a reaction in a addition to the required product
9 of 95
Catalytic Converters
Device fitted to car exhausts with a thin layer of a transition metal catalyst on a honeycomb structure (large surface area). Speeds up reaction of carbon monoxide/unburnt petrol with oxygen to make carbon dioxide and water vapur.
10 of 95
Positively charged ion
11 of 95
Piece of paper showing the results of carrying out chromatography on a substance
12 of 95
Technique for separating the components of a mixture. Works because the substances move at different rates through a piece of paper soaked in solvent.
13 of 95
Collision Theory
Theory of chemical reactions that describes how particles must collide with enough energy to react.
14 of 95
Substance of two or more elements chemically joined together
15 of 95
Compound Ion
Groups of atoms together w/ a positive or negative charge
16 of 95
Measure of how much solute is dissolved in a solvent. The more solute that is dissolved in a fixed volume, the higher concentration of the solution.
17 of 95
Covalent Bond
Bond formed when a pair of electrons is shared between two atoms
18 of 95
Delocalised electrons
Free electrons that can move around between ions in a metal or in the layers of graphite
19 of 95
A form of carbon that is very hard and doesn't conduct electricity. Used in cutting tools.
20 of 95
Displacement reaction
When a more reactive substance displaces a less reactive substance from one of its compounds.
21 of 95
Occurs when a solute splits up and mixes with a solvent to make a solution
22 of 95
Dot and Cross Diagram
Way of showing electron structures in covalent substances using dots and crosses to show electrons from different atoms.
23 of 95
Double Bond
When two bonds are joined by two bonds.
24 of 95
Process is which electrical energy from a d.c supply decomposes some componds
25 of 95
Negatively charged subatomic particle found in shells around the nucleus of the atom.
26 of 95
Electronic Configuration
Arrangement of electrons in shells around the nucleus of an atom
27 of 95
Substance which cannot be split up into simpler substances
28 of 95
Empirical formula
Simplest whole number ratio of atoms of each element in a compound
29 of 95
Reaction that takes heat energy in, decreasing the temperature of the reaction mixture and its surroundings.
30 of 95
Reaction that releases heat energy increasing the temperature of the reaction mixture and its surroundings.
31 of 95
The separation of undissolved solids from a liquid by filtering
32 of 95
Flame test
An analytical test to find out which metal ion is present in a substance. Different metals produce different colours in a Bunsen Burner flame.
33 of 95
Abbreviation for a substance using symbols with two or more atoms or ions
34 of 95
A component of a mixture which has been separated by fractional distillation
35 of 95
Fractionating column
A long column used to separate a mixture of liquids into different fractions with different boiling points.Column is warmer at the top than the bottom
36 of 95
Fractional distillation
Process by which a mixture of two or more liquids is separated using different boiling points
37 of 95
Giant molecular Covalent substance
Substance held together by millions of atoms all held together by covalent bonds.
38 of 95
A form of carbon that is soft and conducts electricity. It is used as lubricant as the layers slip over each other easily
39 of 95
A column in the periodic table containing elements with similar properties
40 of 95
A compound formed between a halogen and another element such as a metal or hydrogen
41 of 95
Liquids that do not form a solution but separate into two layers.
42 of 95
Does not react
43 of 95
Substance that does not dissolve in a given solvent
44 of 95
An atom/ group of atoms with an electrical charge. Become positively charged if they lose electrons and negatively charged ions if they gain electrons.
45 of 95
Ionic bonds
Strong electrostatic force between oppositely charged ions
46 of 95
Ionic Compound
Substance containing ions from two or more elements.
47 of 95
Atoms of an element with the same number of protons and electrons but with different numbers of neutrons.
48 of 95
Lattice Structure
Regular, grid like arrangement of particles such as ions
49 of 95
Convert a substance into a liquid by heating/cooling
50 of 95
A substance placed between two moving surfaces to reduce the friction between them.
51 of 95
Can be hammered into shape.
52 of 95
Measure of the amount of material that there is in an object.
53 of 95
Mass Number
The total number of protons and neutrons in the nucleus of an atom. Also known as the nucleon number.
54 of 95
Melting point
Temperature at which a substance changes from a solid to a liquid
55 of 95
Liquids that completely mix together to form a solution
56 of 95
Molecular formula
This shows the actual number of atoms of each element that combine to make a molecule of a compound
57 of 95
Two or more atoms joined together by covalent bonds
58 of 95
Melted to form a liquid
59 of 95
A sub-atomic particle found in the nucleus of most atoms (electrically neutral)
60 of 95
Noble Gases
Elements in group 0 of the periodic table
61 of 95
The sub-atomic particles in the nucleus of an atom
62 of 95
The positively charged centre of an atom
63 of 95
Percentage by mass
Percentage of total mass for a specific element in a compound; found from the relative mass of the element in the compound divided by the relative formula mass and expressed as a percentage.
64 of 95
Percentage Yield
The actual yield divided by the theoretical yield as a percentage
65 of 95
Row in the periodic table which the atomic number increases by one from one element to the next.
66 of 95
Periodic Table
Chart in which the chemical elements are arranged in order of increasing atomic number
67 of 95
Insoluble product formed in a precipitation reaction
68 of 95
Precipitation Reaction
Reaction in which an insoluble product is formed from soluble reactants
69 of 95
Positively charged sub-atomic particle found in the nucleus of all atoms.
70 of 95
Rate of a chemical reaction
The speed at which a chemical reaction takes place as shown by the change in the amount (or concentration) of the reactant (or product)
71 of 95
How fast or how readily an element reacts
72 of 95
Relative abundance
Number of objects of a particular kind in a sample shown as a percentage of the total number of objects in the sample.
73 of 95
Relative atomic mass
The mean mass of an atom relative to the mass of an atom of carbon-12 which is assigned to a mass of 12.
74 of 95
Relative Charge
The electrical charge of a subatomic particle compared to the electrical charge of a proton.
75 of 95
Relative Formula Mass
The sum of the relative atomic masses of all atoms in a formula
76 of 95
Relative Mass
Mass of subatomic particle compared to the mass of a proton
77 of 95
R f value
Ratio of distance travelled by a solute on a chromatogram (measured from the centre of the spot) compared to the distance travelled by a solvent under the same conditions.
78 of 95
Compound formed by neutralisation of an acid by a base. First part of the name comes from the metal in the metal oxide, hydroxide or carbonate. Second part of the name comes from the acid
79 of 95
Separating Funnel
Funnel with a tap at the bottom that is used for separating immiscible liquids
80 of 95
Space around a nucleus that can be occupied by electrons usually drawn as a circle
81 of 95
Simple Molecular Covalent Substance
Substance made of individual small molecules, with strong covalent bonds holding the atoms together in the molecules but only weak forces between neighbouring molecules
82 of 95
A measure of the amount of substance that will dissolve in a certain volume of solvent
83 of 95
Substance that dissolves in a given solvent
84 of 95
Clear mixture that forms when a solute dissolves in a given solvent
85 of 95
Liquid that dissolves the Solute . Solute + Solvent-> Solution
86 of 95
Solid/Liquid that dissolves in a given solvent to form a solution
87 of 95
Analysis of the light on a spectrum. E.g wavelength of visible light emitted by atoms in flame tests)
88 of 95
State Symbol
Letter or letters to show the state of a substance (e.g g for gas)
89 of 95
Sub-atomic particle
A particle that is smaller than an atom such as a proton neutron or electron
90 of 95
Theoretical Yield
The maximum calculated amount of a product that could be formed from a product that could be formed from a given amount of reactants
91 of 95
A radioactive substance that is deliberately injected into the body or into moving water. Allows the movement of the substance to be followed by detecting the ionising radiation emitted.
92 of 95
Transition Metals
Metals in the central block of the periodic table
93 of 95
Waste product
By products that have no uses
94 of 95
The amount of product formed in a reaction
95 of 95

Other cards in this set

Card 2


Element in Group 1


Alkali Metal

Card 3


Negatively Charged ion


Preview of the back of card 3

Card 4


Mixture formed when a substance is dissolved in water.


Preview of the back of card 4

Card 5


The smallest neutral part of an element that can take part in reactions.


Preview of the back of card 5
View more cards


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all All resources »