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Flashcards in chemical reactions Deck (22):
1

what properties do compounds have

different properties from the elements they contain

2

what are ions

charged particles that form when atoms (clusters of atoms) loose or gain electrons

3

chemical bonds involve electrons from

the reacting atoms

4

what do compounds formed from metals and non metals consist of

ions

5

what happened to metals when it reacts with non metals

loose electrons to form positively charged ions

6

what happened to non metals when it reacts with metals

gains electrons to form negatively charged ions

7

what is the ionic bond

force of attraction between the oppositely charged ions

between metal and non metal

8

what do compounds formed from non metals consist of

molecules

9

what joins atoms in a molecule

covalent bonds

10

when do covalent bonds form

when atoms share pairs of electrons

between non metals

11

what are compounds

when element atoms join with other element atoms using chemical bonds

eg iron sulphate

involves transferring/sharing of electrons

12

what does the chemical formula show

how many
of each type of atom
join together
to make the units
which make up the compound

13

what do balanced symbol equations show

what happens to different atoms in reactions

14

what are things on the left side of word equation arrow called

the reactants

15

what are things on the right side of word equation arrow called

product

16

are any atoms lost or made during a chemical reaction

no

17

what does conversion of mass mean

the total mass of products after the reaction

is the same as the total mass of the products before the reaction

18

are any atoms lost or made during a chemical reaction

no

19

what does conversion of mass mean

the total mass of products after the reaction

is the same as the total mass of the products before the reaction

20

are any atoms lost or made during a chemical reaction

no

21

what does conversion of mass mean

the total mass of products after the reaction

is the same as the total mass of the products before the reaction

no atoms are lost during a chemical reaction

22

give an example of a compound

magnesium oxide
H(2)O
CaCO(3)