1.Acids, bases and salts. Flashcards Preview

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Flashcards in 1.Acids, bases and salts. Deck (16):
1

What is a salt?

salts are ionic compounds formed when the H+ ions in acids are replaced by metal IONS or ammonia ions.

2

What is a base

a proton acceptor

3

What is an acid

a proton donor (releases H= ions in aqueous solution)

4

what is a alkali

Releases OH- ions when in a water solution

5

whys are things classified as a base but not as an alkali?

IF it accepts protons but dosnt dissolve it cant be and alkali because an alkali need to be able to release OH- ions into a solution which cant happen if its insoluble.

6

Acid + metal oxide ---->

Salt + water

7

Acid + metal (reactive) ---->

salt + hydrogen gas

8

Acid + metal carbonate---->

salt + CO2 + water

9

Acid + metal hydro carbonate ---->

salt + water + CO2

10

Acid + alkali ---->

salt + water

11

3 types of bases

Metal hydroxides - HO- ion reacts with H+ to from water
Metal Oxides-
Ammonia (and organic amino componds)

12

dilute amodia decolourises which halid ions?

Chloride

13

conc ammonia decoulourises which halide ions?

Bromide, and Chloride

14

insoluble compoud + acid is slow becuase ....

only the surface of the compound can react at once.

15

methyl orange colours

Alkaline-yellow
neural(bit more acidic 4ph) -orange
acidic - red

16

Phenolphthalein colours

acid - colorless
alkali-pink