Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how



what is the composition of water 2 hydrogen atoms and 1 oxygen atom
what is the test for water anhydrous copper sulphate turns from white to blue
what causes water hardness calcium and magnesium ions
give two methods of getting rid of hard water boiling and using an ion exchange resin
how is scum formed calcium ions and soap form scum
explain the term electrolysis electrolysis is the production of a chemicl change by electricity
why is sulphuric acid added to the water in the electrolysis experiment to help the water conductg electricity
give an advantage of hard water provides calcium for bones and teeth
give a disadvantage of hard water blocks pipes, leaves scale on kettles and boilers
how can we test to show oxygen is produced during electrolysis use a glowing splint - it reignites
how can be test to show hydrogen is produced during electrolysis use a glowing splint - it burns with a pop
in the ion exchange resin what ion replaces the calcium ion sodium ions
when water is boiled what is the dissolved hydrogen carbonate changed to . solid limestone called 'fur'
what is soft water water that lathers easily with water
The water treatment process involves 5 stages which of the 5 stages involves adding a substance to the water chlorination, fluoridation and settling
what is the name of the chemical added to get rid of germs chlorine
whatis the name of the chemical added to help to reduce tooth decay fluoride
whaqt is the name of the chemical used to take the cloudiness out of the water aluminium sulphate
Created by: mariepkelly



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards