end of year revision Flashcards
what is a hazard
something that has the potential to harm you
what is a risk
the likelihood of a hazard causing harm
list 2 hazards at home
1- burning yourself with a stove
-getting electric shock by touching a live socket
Describe how the risk or harm could be reduced
Cover the socket
Make sure an adult is supervising you when cooking
what is an acid
A substance that turns litmus red. it has a pH ofn less than 7
What is an indicator
Substances that change colour when they are added to a an acid or alikine.It determines if an substance is acid , alkaline or neutral
how can you tell if something is an acid
name 2
it has an pH of 1-6
they r sour
why is UI the most effective indicator
It tells us how acid or alkaline a substance is
what is a acid plus base
slat plus water
what is acid plus alakine
base plus salt
what salt what salt is made with hydrochoric acid
chloride
what salt what salt is made with sulfuric acid
sulfate
what salt what salt is made with nitric acid
nitrate
