Question

Note on change in materiel in our surrounding

Answer 1

Answer:

sry

Explanation:

Answer 2

Answer:

Chemical reactions take place when existing bonds between atoms are broken and new bonds form. When the gas ethene is heated at high pressure, its molecules link together in long chains to make the plastic polythene. Polythene is used to make plastic dishpans, squeeze bottles, and plastic bags.

Explanation:

We can use chemical reactions and heat to change materials and their properties to meet our needs. Some changes are PERMANENT, others are REVERSIBLE.