Question

gold - au

1. give one property of gold.
2. what particle determines how reactive an element is?

copper - cu

1. give one property of copper.

the alloy

1. what alloy does tin make when mixed with copper?
2. how are atoms arranged in pure metals?
3. why isnt pure copper used for bells instead of bronze?

electron microscope

1. what part of the atom is actually visible under the

Explanation:

• For question 2: Gold is malleable (a common physical property).
• For question 3: The number of valence electrons determines an element's reactivity.
• For question 6: Copper is a good conductor of electricity.
• For question 7: Tin and copper form bronze.
• For question 8: Atoms in pure metals are arranged in a regular, repeating pattern in a metallic - crystal lattice.
• For question 9: Bronze has a better sound - producing quality than pure copper, so it is preferred for bells.
• For question 10: Under an electron microscope, the electron cloud of the atom can be considered as being 'visible' as it interacts with the electron beam.

Answer:

1. Malleability
2. Valence electrons
3. Good electrical conductivity
4. Bronze
5. In a regular, repeating pattern (metallic - crystal lattice)
6. Bronze has better sound - producing quality
7. Electron cloud