This picture shows a sword. The sword is about 3400 years old. It is made of an alloy called bronze.
Bronze is made from copper and tin.
Bronze made better swords than pure copper. This is because bronze is harder than pure
copper
Explain why bronze is harder than pure copper.
Your answer should include details of
- how the atoms are arranged in pure copper and bronze
why pure copper is relatively soft
why bronze is harder.

Bronze is made of the metals copper and tin.

Explanation:

Bronze is stronger than copper as an outcome of combining that metal with tin or different ores. Bronze is more quickly dissolved and is hence more comfortable to cast. It is also harder than pure metal and considerably extra immune to corrosion.

Pure copper is soft and can be formed into wire or pounded into wanted shapes. If the copper is consequently warmed (tempered), it can be performed soft again. Copper and zinc are blended to create brass, and mixed with tin to produce bronze.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

i do not get it   at all