Reactivity Trends (PAG C1) Flashcards

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What is the reactivity series of metals?

It is a list of metals in order of how easily they react.

What is a displacement reaction between metals?

A more reactive metal takes the place of a less reactive metal in a compound.

In a metal and acid experiment, what does faster fizzing show about the metal?

Faster fizzing shows the metal is more reactive and reacts more quickly.

When a metal reacts with dilute hydrochloric acid, what gas is made and how can you test it?

The gas is hydrogen. You test it with a lit splint and listen for a squeaky pop.

How does the reactivity of Group 1 alkali metals change as you go down the group?

Reactivity increases as you go down the group. For example, potassium is more reactive than sodium.

How does the reactivity of Group 7 halogens change as you go down the group?

Reactivity decreases as you go down the group. Chlorine is more reactive than bromine and iodine.

What happens when chlorine water is added to potassium iodide solution?

Chlorine displaces iodine because it is more reactive. A brown colour appears as iodine forms.

In a metal displacement practical, what is the independent variable, the thing you change?

The independent variable is the type of metal you use, such as magnesium, zinc or iron.

In a metal and acid reactivity experiment, what is one possible dependent variable?

A dependent variable could be the time taken for fizzing to stop or the volume of gas made.

Give one safety precaution when testing reactivity of metals with acids or water and explain why.

Wear safety goggles to protect your eyes from splashes and any small bits of hot metal.