Science, asked by Anonymous, 8 months ago

1. Give any two examples of physical change.

2. What is the colour of flame when Magnesium is burnt?

3. What happens when carbon dioxide passed through lime water?

4. What are the essential conditions for rusting?

5. What is the colour of Rust?

6. What is galvanization? ​

Answers

Answered by greatmagician
0

Answer:

1. making dough and melting candle

2. yellow-orange

3. caco3 is formed and lime water becomes milky

4. oxygen and moisture in air

5. reddish-brown

6. Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc

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Answered by Anonymous
2

Answer:

  1. melting an ice cube , breaking a glass
  2. bright white
  3. it forms a white precipitate ( appears milky ) of calcium carbonate CaCo3
  4. oxygen and water
  5. orange- brown colour
  6. it is the process of applying zinc coating over iron or steel to prevent rusting.

Explanation:

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