Identifying Ions

Test yourself

Flame Tests

Flame tests can identify metal ions. The following positive metal ions all burn with a characteristic colour:

Lithium (Li⁺)

Crimson flame.

Sodium (Na⁺)

Yellow flame.

Potassium (K⁺)

Lilac flame.

Illustrative background for Calcium (Ca<sup>2+</sup>)

Illustrative background for Calcium (Ca<sup>2+</sup>) ?? "content

Calcium (Ca²⁺)

Orange-red flame.

Illustrative background for Copper (Cu<sup>2+</sup>)

Illustrative background for Copper (Cu<sup>2+</sup>) ?? "content

Copper (Cu²⁺)

Green flame.

1Biology

1.1Practicals

1.1.1Microscope & Bacteria

1.1.2Bacteria

1.1.3Osmosis Tests

1.1.4Osmosis & Food Tests

1.1.5Enzymes

1.1.6Enzymes 2

1.1.7Photosynthesis & Plant Responses

1.1.8Photosynthesis Experiments

1.1.9Reaction Time

1.1.10Quadrats

1.1.11Decay

2Chemistry

2.1Practicals

2.1.1Salts

2.1.2Neutralisation

2.1.3Titration

2.1.4Electrolysis

2.1.5Electrolysis 2

2.1.6Rate of Reaction

2.1.7Rate of Reaction 2

2.1.8Chromatography

2.1.9Identifying Gases

2.1.10Identifying Gases 2

2.1.11Identifying Ions

2.1.12Carbonates, Halides & Sulfates

2.1.13Flame Emission Spectroscopy

2.1.14Water Purification

2.1.15Water Purification 2

3Physics

3.1Practicals

3.1.1Specific Heat Capacity

3.1.2Thermal Capacity & Insulation

3.1.3Latent Heat

3.1.4Resistance & Current

3.1.5Resistance & Current 2

3.1.6Density

3.1.7Density 2

3.1.8Force & Extension - Springs

3.1.9Waves - Ripple Tank

3.1.10Light

3.1.11Light Reflection & Refraction

3.1.12Radiation

3.1.13Radiation 2

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