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Chemistry
Inorganic Chemistry (Pg 35-48)
| Question | Answer |
|---|---|
| Name four properties of alkali metals | Reactive, soft, low density, low melting point |
| As you go down group 1, the metals become ________ reactive. Their melting and boiling points ____________. | More, decrease |
| Why does the reactivity of Group 1 metals increase as you go down the group? | Atoms get larger, meaning outer shell electrons are further away from the positive nucleus. This means the electrostatic attraction between the two decreases, so the outer shell electrons are lost more easily, making the element more reactive |
| Alkali metal + water = _____________ + ______________ | Metal hydroxide + hydrogen |
| What colour is sodium chloride? | White |
| Chlorine is a poisonous, _________ gas | Green |
| Bromine is a poisonous, ____________ liquid, which gives off an ________ vapour at room temperature | Red-brown, orange |
| Iodine is a __________ crystalline solid, which gives off a _____________ when heated | Dark grey, purple |
| What happens when you add chlorine water to potassium bromide solution? | Orange solution formed |
| What happens when you add chlorine water to potassium iodide solution? | Brown solution formed |
| What happens when you add bromine water to potassium iodide solution? | Brown solution formed |
| What happens when you add bromine water to potassium chloride solution? | No reaction |
| What does thermal decomposition mean? | To break something down using heat |
| What colour change occurs when copper carbonate has been thermally decomposed? | Green to black |
| What colour flame does magnesium give when burned in oxygen? | White |
| If you heat a metal carbonate, it will produce a _______________ and ______________. | Metal oxide, carbon dioxide |
| What are 3 examples of greenhouse gases? | Water vapour, methane, carbon dioxide |
| Acid + metal = ________ + __________ | Salt + hydrogen |
| Metal + water = __________ +____________ | Metal hydroxide + hydrogen |
| What is the word equation for the rusting of iron? | Iron + oxygen + water = hydrated iron(III) oxide (rust) |
| How are metals which are LESS reactive that carbon extracted from ores? | Heating the ore with carbon monoxide (a reduction reaction) |
| How are metals which are MORE reactive than carbon extracted from ores? | Electrolysis (using electricity to separate the metal from other elements) |
| Why is using a pH probe more realisable than universal indicator? | Colour is subjective, probe is more accurate |
Created by:
PodgyGeordie
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