end of yeqar

Question 1

what two elements are liquid at room temperature

Answer 1

hg and br

Question 2

whats group 1 of the periodic table

Answer 2

alkali metals

Question 3

whats group 7 of the periodic table

Answer 3

halogens

Question 4

whats group 8 of the periodic table

Answer 4

noble gases

Question 5

whats group 2 and 3 of the periodic table

Answer 5

transition elements

Question 6

what is a popular conducter

Answer 6

shiny metals

Question 7

what is on the LHS on the pt

Answer 7

metals

Question 8

whats on the rhs of the pt

Answer 8

non metals

Question 9

what can sodium hydroxide solution be used to test?

Answer 9

To indicate the presence of metal ions

Question 10

what cam the colour of the solution identify

Answer 10

the metal present

Question 11

whats the test for hydrogen gas

Answer 11

burns w a speaky pop

Question 12

whats the test for oxygen gas

Answer 12

re-lights a glowing splint

Question 13

test for carbon dioxide is

Answer 13

turns limewater milky

Question 14

what are the three forms of calcium carbonate

Answer 14

chalk, marble and limestone

Question 15

what do eggshells contain

Answer 15

calcium carbonate

Question 16

what is glass made from

Answer 16

sodium carbonate

Question 17

calcium carbonate + hydrochloric acid——-

Answer 17

calcium chloride + co2+h20

Question 18

what do you use to test for sulfates

Answer 18

barium chloride

Question 19

whats hroup 7 of the periodic table

Answer 19

haolgens

Question 20

how do you test to see if a solution contains chloride bromide or iodide ions

Answer 20

using silver nitrate

Question 21

what dose (aq) mesn

Answer 21

aqueous-disolves in a solution

Question 22

what is a hydrocarbon

Answer 22

hydrocarbons are compounds that contain hydrogen and carbon only

Question 23

what is used to idnetify halideions

Answer 23

silver nitrate

Question 24

what colour is chloride

Answer 24

white precipitate

Question 25

what colour is bromide

Answer 25

cream precipitate

Question 26

what colour is rodine

Answer 26

yellow

Question 27

what is photosynthesis

Answer 27

the process by which plants make carbohydrates from carbon dioxide

Question 28

whats the process in which energy is released from carb hydrates from plants and animals

Answer 28

respiration

Question 29

fossil fuels consist of what compounds

Answer 29

hydrocarbons

Question 30

what do hydrocarbons produce when burnt

Answer 30

co2 and h20

Question 31

hydrogen + oxygen ——

Answer 31

water

Question 32

wwater——(electroysis)

Answer 32

hydrogen + oxygen