stuff

Question 1

Functional group carboxylic acids

Answer 1

COOH

Question 2

functional groups esters

Answer 2

COO

Question 3

in water all acids

Answer 3

IONISE

Question 4

adding what to hard water removes hardness

Answer 4

washing soda

Question 5

common catalyst

Answer 5

nickel

Question 6

burning alcohol makes

Answer 6

CO2+ H2O

Question 7

esters made up of

Answer 7

carboxylic acid + alcohol + catalyst

Question 8

check results were acurate… include which word?

Answer 8

reproducibilty

Question 9

explain WHY…

Answer 9

state the obvious

Question 10

read meniscus

Answer 10

at eye level

Question 11

hard water scale is

Answer 11

insoluble

Question 12

when mentioning ions…

Answer 12

which ions

Question 13

Ion exchange resin

Answer 13

replaces ions

Question 14

the flame colours can be

Answer 14

masked by other colours

Question 15

it might be suitable as a fuel because

Answer 15

more energy released making than breaking

Question 16

maximum mass

Answer 16

bums method.

Ar divided itself mutiplied by weight in question

Question 17

empirical formula

Answer 17

mass given in question (or %) DIVIDED BY actuall mass (Ar)

then make ratio

Question 18

alkene

Answer 18

unsaturated hydrocarbons

double bonds

Question 19

alkane

Answer 19

saturated hydrocarbons

Question 20

shape memory polymers in stitches

Answer 20

use temperature to make thread tighten and close wound

Question 21

non biodegradeable plastics

Answer 21

take up landfill
ugly waste
dont break down for ages

Question 22

decomposing plastics have

Answer 22

starch in their structures

Question 23

retention time

Answer 23

the time taken for a substance to get through a column in mass spectrometry

Question 24

why do retention times differ

Answer 24

different substances attracted to substances in the column

Question 25

what are in thermosetting polymers??

Answer 25

CROSSLINKS

Question 26

functional group alcohols

Answer 26

OH