Kevin's Cards about Chemistry Definitions

Question 1

What is Chemistry

Answer 1

The study of the stuff the world is made of from the physical and chemical properties of matter and how it behaves in chemical reactions.

Question 2

Who was Antoine Laurent Lavoisier

Answer 2

A chemist

Question 3

What were some of Antoine Laurent Lavoisier discovers

Answer 3

He realized air was made of several parts and that a very important part of it is released by plants and is also combined with hydrogen to make water.

Question 4

What did Antoine Laurent Lavoisier call the substance plants gave off

Answer 4

Oxygen

Question 5

What was one of Antoine Laurent Lavoisier laws

Answer 5

What goes in ( the reactants ) always weighs the same of what comes out (the product )

Question 6

How did Antoine Laurent Lavoisier die

Answer 6

He was beheaded during the French Revolution because people didn’t like his teachings

Question 7

What does Alkali mean

Answer 7

A chemical base that dissolves water

Question 8

Amorphous meaning

Answer 8

A solid without order to its internal structure

Question 9

Base Metals definition

Answer 9

The most highly reactive metal in the reactive series

Question 10

Bond definition

Answer 10

The links between atoms formed by the interaction of their outer electrons. There are three types of bonds: ionic, covalent, and metallic

Question 11

Burette Definition

Answer 11

An instrument used during titrations to determine concentration. It is a vertical glass tube with a volumetric scale and a tap on the bottom.

Question 12

Caustic Definition

Answer 12

A substance that burns skin

Question 13

Centrifuge Definition

Answer 13

A machine that uses rapid rotation to separate substances of different shapes and densities

Question 14

Concentration definition

Answer 14

The number of particles of a chemical in a certain volume; given as moles per meter cubed

Question 15

Covalent Bond Definition

Answer 15

A chemical bond in which two or more atoms share electrons

Question 16

Crystal Structure Definition

Answer 16

A solid with an ordered internal structure

Question 17

Diffusion Definition

Answer 17

The process by which particles spread through a solid, liquid, or gas. In a gas, diffusion is helped by Brownian Motion

Question 18

Dissolve Definition

Answer 18

When a solid mixes completely with a liquid forming a solution.

Question 19

Electron Definition

Answer 19

A negatively charged subatomic particle, found orbiting the nucleus of an atom

Question 20

Electron Shell Definition

Answer 20

Electrons slot into certain fixed energy levels around an atom, called shells. Only electrons in the outer shells interact with other atoms or ions.

Question 21

Endothermic Definition

Answer 21

Describes a chemical reaction that absorbs heat energy

Question 22

Exothermic Definition

Answer 22

Describes a chemical reaction that gives out heat energy

Question 23

Internal Energy Definition

Answer 23

The movement of atoms or molecules in a substance. Internal energy can be increased by heat or excitation with electromagnetic waves ( e.g. microwaves )

Question 24

Ionic Bond Definition

Answer 24

A chemical bond between ions, held together by the electrostatic attraction between positive and negative ions

Question 25

Neutron Definition

Answer 25

A subatomic particle with no charge, found in the nucleus of an atom. It’s the heaviest part of the atom.

Question 26

Noble Metals Definition

Answer 26

The most unreactive metals in the reactivity series

Question 27

Nucleus Definition

Answer 27

The center of an atom, containing protons and neutrons, in all elements except hydrogen

Question 28

Oxidation Definition

Answer 28

A type of chemical reaction in which a substance loses electrons

Question 29

Oxide Definition

Answer 29

A compound containing oxygen, formed in an oxidation reaction. Metal oxides are often rust or tarnishes on the surface of metals

Question 30

Photosynthesis Definition

Answer 30

A chemical reaction that takes place in plants: sunlight and carbon dioxide are converted into sugar and oxygen.

Question 31

Polar Definition

Answer 31

Describes a covalent molecule with positive and negative ends.

Question 32

Proton Definition

Answer 32

A positively charged subatomic particle, found in the nucleus of an atom. The number of protons an atom has is also the atomic number.

Question 33

Radioscope Definition

Answer 33

An unstable isotope, which is radioactive.

Question 34

Reduction Definition

Answer 34

A type of chemical reaction in which a substances gains electrons.

Question 35

Salt Definition

Answer 35

An ionic compound that dissolves to release positive and negative ions. When an acid reacts with a base, it produces salt and water.

Question 36

Solution Definition

Answer 36

A liquid mixture of two or more substances

Question 37

Solvent Definition

Answer 37

A liquid that dissolves another substance

Question 38

State of Matter Definition

Answer 38

The state in which a substance is found at a particular temperature and pressure. There are three broad states of matter: solid, gas, and liquids.

Question 39

Surface Tension

Answer 39

A force between the molecules in a liquid that pulls them together-it allows bugs to walk on water without breaking the surface!

Question 40

Synthesis Definition

Answer 40

A series of chemical reactions that result in a predetermined product. This process is used to produce chemicals industrially.

Question 41

Vacuum Definition

Answer 41

A space of empty of matter, found inside thermometers and in outer space.

Question 42

Volatile Definition

Answer 42

Describes a substance that reacts chemically with other substances.