Nature's Chemistry

Question 1

what is an isomer

Answer 1

compounds with the same molecular formula, different structural formula

Question 2

when naming hydrocarbons, hyphens go between

Answer 2

numbers and letters, commas go between numbers only

Question 3

an exothermic reaction ____?

Answer 3

gives out heat energy, resulting in a temperature increase

Question 4

an endothermic reaction ______?

Answer 4

takes in heat energy, resulting in a temperature increase

Question 5

uses for alchohols

Answer 5

alchoholic drinks, perfume, fuels

Question 6

uses for alkanes

Answer 6

cooking gases, petrol

Question 7

uses for alkenes

Answer 7

fuels and solvents

Question 8

uses for cycloalkanes

Answer 8

diesel and motor fuel

Question 9

formula for combustion

Answer 9

hydrocarbon + O2 = CO2 + H2O

Question 10

uses for carboxylic acids

Answer 10

pickling and cleaning

Question 11

what is a homologous series

Answer 11

series of compounds with same general formula, similar chemical properties and a trend in physical properties

Question 12

test for oxygen

Answer 12

relights a glowing splint

Question 13

test for CO2

Answer 13

turns limewater cloudy

Question 14

test for H2O

Answer 14

turns cobalt chloride paper from blue to pink

Question 15

when does incomplete combustion occur

Answer 15

when there is not enough oxygen

Question 16

incomplete combustion can produce

Answer 16

carbon monoxide

Question 17

a fuel is ______?

Answer 17

a substance which reacts exothermically with oxygen (gives out energy, resulting in temperature increase)