Topic 4 Flashcards
(21 cards)
Finish this equation
Acid + Base ->
Acid + Base -> salt + water
Finish this equation
Acid + Alkali ->
Acid + Alkali ->salt + water
Finish this equation
Acid +metal ->
Acid + metal -> Salt + hydrogen
Finish this equation
Acid +metal carbonate ->
Acid + metal carbonate -> salt + water + carbon dioxide
What are these state symbols (S) (L) (G) (Aq)
Solid
Liquid
Gas
Aqueous
Define Base
A substance that will react with a acid to form only a salt and water
Define alkali
A solution that contains exes OH- ions, terns litmus blue and has a ph above 7.
Define Salt
A conpund formed by the neutralisation of a acid with a base
What is a aqueous solution
A mixture that is formed when a substance is resolved in a liquid
Define acid
A solution that reacts with alkalis, terns litmus red and has a ph below 7
What dose the pH scale measure
Acidity and alkalinity
If a solution has a pH of 10 is it acid or alkaline
Alkaline
If a solution has a pH of 5 is it an acid or alkaline
Acid
If a solution has a pH of 7 is it acid or alkaline.
Nether it is neutral
What is neutral on the pH scale
7
What is used to find the pH of a solution
Indicators
What are indicators
A substance that can change colour depending on the pH of a solution
Define the pH scale
A scale witch shows acidity and alkalinity. Going up to 14. Below seven is acid, seven is neutral and above seven is acid
What is universal indicator
It is a mix of indicators giving a different colour at different points on the pH scale
What is a ion
A ion is a atom that has become negatively charged by losing or gaining a electron
If a atom gains a electron dose it become negatively charged or positively charged.
Negatively charged
