Question

A.State true or false.
1. The substances that are formed after a chemical reaction are called reactants. Jenie
2. Precipitation produces soluble substances.
3. Lead iodide is a yellow insoluble compound.
4. During a chemical reaction, there occurs a change in energy.
B.Fill in the blanks.
1. Substances react with one another to form_____.
2. ______ is an insoluble solid that is formed during a chemical reaction when two
substances react with one another in a solution.
3._______has the smell of rotten eggs.
4. The evolution of _______ in a chemical reaction is identified by reddish brown fumes.


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Answer 1

Answer:

1. False

2. False

3. True

4. False

1. Product

2. Precipitate

3. Hydrogen Sulphide

4. NO2