Unit 1, Key Words 1 - Mixing Dissolving & Separating Flashcards

1
Q

Risk

A

Risk is the chance that a hazard will cause harm.

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2
Q

Laboratory

A

a room or building equipped for scientific experiments, research, or teaching, or for the manufacture of drugs or chemicals.

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3
Q

Hazard

A

A hazard is something that can cause harm, e.g. electricity, chemicals, working up a ladder, noise, a keyboard, a bully at school, stress

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4
Q

Apparatus

A

Equipment used for the purpose of conducting scientific experiments

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5
Q

Experiment

A

a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

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6
Q

Line diagram

A

A 2-D drawing used to represent apparatus in scientific drawings

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7
Q

Measuring

A

use of scientific equipment to ascertain the size, amount, or degree of something.

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8
Q

Meniscus

A

The curved upper surface of a liquid in a container

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9
Q

Data

A

The values recorded during a scientific experiment

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10
Q

Units

A

The scale on which measurements are recorded e.g. cm, mm, g, kg, minutes, seconds

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11
Q

Material

A

Anything that is made of matter or particles

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12
Q

Compound

A

Two or more chemical substances chemically joined together

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13
Q

Element

A

A chemical substance made up of only one type of atom ‘pure’

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14
Q

Symbol

A

Universally used notation of one or two letters to represent chemical substances

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15
Q

Molecule

A

Two or more atoms held together by strong chemical bond

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16
Q

Pure

A

When only one type of element or compound is present

17
Q

Mixture

A

Two or more elements or compounds mixed together but not chemically joined

18
Q

Limescale

A

A white substance composed of calcium compounds that were dissolved in water

19
Q

Water

A

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

20
Q

Purifying

A

Making pure or nearer to pure