Chemistry, 26.06.2020 17:01 Yungnaudie

1. Which of these is a useful Chemical reaction? a) Food rancidity

b) Photosynthesis

c) Rusting

d) None

2. Which of the following statements is True?

a) Respiration is chemically the opposite of photosynthesis

b) Rusting is a rapid process

c) Complete combustion requires short supply of oxygen

d) Photosynthesis requires oxygen

Help me please, no guess work.
THANKS!.

Answers: 3

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1. Which of these is a useful Chemical reaction? a) Food rancidity

b) Photosynthesis

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