Chemistry Vocab

Question 1

What is Acid

Answer 1

When dissolved in water, its solution has a pH value less than 7. Acids are proton (H+ ion) donors.

Question 2

What is activation energy?

Answer 2

The minimum energy needed for a reaction to take place.

Question 3

What are alkali metals?

Answer 3

Elements in Group 1 of the periodic table.

Question 4

What is an Alkali?

Answer 4

Its solution has a pH value more than 7.

Question 5

What is an alkane?

Answer 5

It is saturated hydrocarbon with the general formula CnH2n+2 for example, methane, ethane, and propane.

Question 6

What is an Alkene?

Answer 6

Unsaturated hydrocarbon which contains a carbon-carbon double bond. Its general formula is CnH2n, for example, ethene C2H4.

Question 7

What is an alloy?

Answer 7

A mixture of two or more elements, at least one of which is a metal.

Question 8

What is an anhydrous?

Answer 8

Describes a substance that does not contain water.

Question 9

What is an anode?

Answer 9

The positive electrode in electrolysis.

Question 10

What is an anomalies?

Answer 10

Results that do not match the pattern seen the other data collected or are well outside the range of other repeat readings (outliers).

Question 11

What is an aqueous solution?

Answer 11

The mixture made by adding a soluble substance to water.

Question 12

What is an atom?

Answer 12

The smallest part of an element that can still be recongnised as that element.

Question 13

What is an atomic number?

Answer 13

The number of protons (which equals the number of electrons) in an atom. It is sometimes called the proton number.

Question 14

What is avogadro constant?

Answer 14

The number of atoms, molecules, or ions in a mole of any substance (i.e. 6.02x10*23 per mol).

Question 15

What is a balanced symbol equation?

Answer 15

A symbol equation in which there are equal numbers of each type of atom on either side of the equation.

Question 16

What is the base?

Answer 16

The oxide, hydroxide , or carbonate of a metal that will react with an acid, forming a salt as one of the products.

Question 17

What is biofuel?

Answer 17

Fuel made from animal or plant products.

Question 18

What is bioleaching?

Answer 18

The process of extracting metals from ores using microorganisms.

Question 19

What is blast furnace?

Answer 19

The huge reaction vessels used in industry to extract iron from its ore.

Question 20

What is bond energy?

Answer 20

The energy required to break a specific chemical bond.

Question 21

What is a carbon footprint?

Answer 21

The total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event.

Question 22

What is a catalyst?

Answer 22

A substance that speeds up a chemical reaction by providing a different pathways for the reaction that has a lower activation energy. The catalyst is chemically unchanged at the emd of the reaction.

Question 23

What is a categoric variable?

Answer 23

Categoric variables have values that are labels. For example types of material.

Question 24

What is a cathode?

Answer 24

The negative electrode in electrolysis

Question 25

What is ceramics?

Answer 25

Materials made by heating clay, or other compounds, to high temperatures (called firing) to make hard, but often brittle, materials, which make execellent electrical insulators.

Question 26

What is a chromatography?

Answer 26

The proccess whereby small amounts of dissolved substances are seperated by running a solvent along a material such as absorbent paper.

Question 27

What is a closed system?

Answer 27

A system in which no matter enters or leaves

Question 28

What is a collision theory?

Answer 28

An explanation of chemical reactions in terms of reacting particles colliding with sufficent energy for a reaction to take place.