In this investigation we will find out which two metals combined together give the higher voltage when reacting with acid.

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Chemistry Investigation

Introduction

In this investigation we will find out which two metals combined together give the higher voltage when reacting with acid. The metals used will be:

* Aluminium

* Zinc

* Iron

* Tin

* Lead

* Nickel

* Copper

To make a prediction on what metals will be the ones that give the highest voltage when combined together you need to find out if the position in which the metals are at in the reactivity series would make a difference, and if it does, how? You also need to find out how the metals react with acids.

We know that the higher the metal is in the reactivity series, the stronger it will react with an acid.

Theory

Batteries have chemicals inside to store energy. When two different metals that are connected by a wire are placed into an acid, a potential difference (voltage) is produced. This occurs because the metals react with the acid forming Hydrogen acid, a metal salt solution and an electric charge. The charge flows from the most reactive metal to the least reactive metal.

Equipment