Advertisements
Advertisements
Question
What is meant by a substance?
Solution
- A substance is one that is composed of only one type of atom or molecule.
- A substance might be an element or a compound; for example, water has only one type of particle, so it is a material.
APPEARS IN
RELATED QUESTIONS
Explain why, a solution of salt in water is considered a mixture and not a compound.
Classify the following materials as homogeneous mixtures and heterogeneous mixtures :
Soda-water, Wood, Air, Soil, Vinegar, Alcohol and water mixture, Petrol and water mixture, Chalk and water mixture, Sugar and water mixture, Copper sulphate solution.
Solutions are
Define the following:
Alloy
Give reason:
Why sulphur does dissolve when carbon disulphide is added to a mixture of iron and sulphur but not when it is added to iron sulphide?
Name the components present in the following mixture:
Bronze
Name four substances that can be used as filters.
Suggest separation technique(s) one would need to employ to separate the following mixture.
Kerosene oil, water and salt
The constituents that form a mixture are also called ______.
A mixture does not have a fixed ______.