definition

Question 1

volatility

Answer 1

liquid that evaporates easilt

Question 2

miscible

Answer 2

if two liquids form a completely unitorm mixture when added together

Question 3

elements

Answer 3

substance that can’t be further divided into simpler substances chemically

Question 4

allatoms of an element (proton number)

Answer 4

same number of proton

Question 5

compound

Answer 5

substance formed by the chemical reaction of two or more elements in fixed proportions

Question 6

mixture

Answer 6

2 or more substances mixed togethr without chemical reaction

Question 7

isotopes

Answer 7

atoms of the same element that has the same proton number but different nucleon number

Question 8

covalent bonding

Answer 8

a shared pair of electrons between two atoms

Question 9

giant covalent structure

Answer 9

substance where large number of atoms are held together by covalent bonds
forming a strong lattice

Question 10

ionic bonding

Answer 10

held together by strong electrostatic forces of attraction between oppositely charged ions

Question 11

metallic bonding

Answer 11

the electrostatic attraction between the positive lattice and a sea of delocalised electrons

Question 12

empirical formula

Answer 12

simplest whole number ratio of the atoms of each element present in one molecule or formuka unit of the compound

Question 13

molecular formula

Answer 13

a compound as the number and type of different atoms in one molecule

Question 14

electrolysis

Answer 14

process of using electricity to break down ionic compound in molten or aqueous state

Question 15

electrolyte

Answer 15

molten or aqueous substance that conducts electricity due to presence of free moving ions

Question 16

electroplating

Answer 16

used to coat metal with another

Question 17

reversible reaciton

Answer 17

chemical reactions that can go either forward or backwards, depending on conditions

Question 18

chemical equilibrium

Answer 18

rate of forward reaction is equals to the rate of background reaction and the concentration of the reactant and products remain constant

Question 19

closed system

Answer 19

a system where none of reactants and products can escape the reaction mixture
or the container where the reaction is taking place

Question 20

oxidising agents

Answer 20

substance that oxidises another substance and is itself reduced

Question 21

reducing agents

Answer 21

a substance that reduces another substance and is itself oxidised

Question 22

acid

Answer 22

proton donoe

Question 23

base

Answer 23

proton acceptor

Question 24

basic oxides

Answer 24

only reacta w acids, metal oxides

Question 25

acidic oxides

Answer 25

only reacts with bases, non metal oxide

Question 26

amphoteric oxide

Answer 26

reacts w/ acid and alkali, zinc & aluminium oxide

Question 27

neutral oxide

Answer 27

dont react w acid and alkali CO, NO, H2O

Question 28

salt

Answer 28

a compound formed from an acid by the replacement of the hydrogen in the acid by a metal of ammonium ions

Question 29

saturated solution

Answer 29

a solution that can no longer dissolve a solute at a specific temperature