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Hard substances are those which are difficult to scratch. For instance candle wax is not hard, you can scratch it with your finger nail. This means your nail is harder than wax. However, an iron nail could scratch your finger nail, but not the other way round, so an iron nail is quite hard. Diamond is the hardest natural substance.
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What are hard substances?
The substances that are hard and which cannot be scratched is known as hard substances
Because change the identity of the substances involved they are hard to reverse?
ChemicalBecause CHEMICAL change the identity of the substances involved they are hard to reverse.
Is there a difference in how soft water and hard water dissolves substances?
yes
What makes the bone hard and tough?
The substances that makes the bone hard and strong are calcium and phosphorous. They are minerals found in our food. They are the main substances that make the bones hard and strong.
Will one Vicodin show up on a drug test?
Not atall, only hard substances
What does a high boiling temperature indicate about a substances?
intermolecular forces are hard to overcome...apex
What are 5 substances and 5 mixtures?
This is a very hard question! Does anybody else know?
Substances that cannot be broken down by chemical mean?
Substances that cannot be chemically broken down into simpler substances are called elements.
What is BP referring to chemical substances?
With reference to chemical substances, the acronym BP would mean boiling point.
What is a harmful reaction to substances called?
Did you mean: "What is a reaction to harmful substances called?" ? Allergy, infection, poisoning or death.
What are some substances that are acidic?
If you mean every day substances, some are vinegar, orange juice, lemon juice, and sodas.
What does it mean for a substance to be polar and nonpolar?
Non-polar substances have no charges (nonionic) while polar substances have charges (ionic)
