Acids And Alkalis Key Words (ms Assari) Flashcards

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1
Q

Acid

A

a substance that has a pH lower than 7

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2
Q

Corrosive

A

a substance which reacts with materials and makes them dissolve

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3
Q

Irritant

A

something that reddens the skin

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4
Q

Hydrogen

A

the atom present in all acids

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5
Q

Alkali

A

a soluble base that has a pH higher than 7

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6
Q

Soapy

A

the effect produced when an alkali is added to water

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7
Q

Hydroxide

A

the particle present in alkalis

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8
Q

Indicator

A

a dye that can change colour when placed in environments with different pH values

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9
Q

Litmus

A

an indicator which tells us if something is an acid or an alkali

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10
Q

Neutral

A

When a substance is neither acidic or alkaline

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11
Q

Strong acid/alkali

A

Contains a lot of hydrogen ions/ particles (acid) or a lot of hydroxide ions / particles (alkalis)

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12
Q

Week acid/ alkali

A

contains only a few hydrogen particles / ions (acid) or a lot of hydroxide particles / ions (alkali)

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13
Q

Universal Indicator

A

a mixture of dyes which create a range of colour depending on the strength of acidity or alkalinity being tested

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14
Q

pH number

A

The scale from 1-14 which shows acidity or alkalinity

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15
Q

neutralisation

A

When an acid and alkali combine resulting in products with pH 7

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16
Q

Titration

A

a laboratory method allowing accurate volumes of liquids to be measured

17
Q

Water

A

A molecule of water contains 2 hydrogen atoms and one oxygen atom

18
Q

Salt

A

A substance formed when an acid reacts with a base

19
Q

Equation

A

a way of summarising a chemical reaction with the reactants on the left of the arrow and the products on the right

20
Q

Base

A

Something which neutralises an acid