2. Why do we use rough texture on Tyres and smooth texture on toys?
3. Why should we not touch the metallic part of an electric cable
connected to a live source?
4. Define pure substance and mixture. with example,
5. How can we solve and additional amount of solute in a saturated
solution?
6. Why is one strongly advised not to drink distilled water?
Answers
Answer:
all of them are mentioned below do check explanation
Explanation:
2. as tyres are used to maintain the friction between the road that's why they have rough texture which can be useful for breaking etc,while as toys have soft texture as they are given to infants.. and infants need soft things to play with so that couldn't hurt them
2. as metal carries electric current.
3.pure substance is that substance which is made of same kind of atoms molecules.
mixture is that substance which is made of different kind of atoms and molecules
Answer:
2.rough texture on tyres are for better grip.
these textures increase the friction between road and tyre and thereby reduces the chances of road accidents.
3.Since metals are good conductors of electricity.
the metallic parts of electric circuit connected to a live source will be carrying electric current, on touching these parts we will be experiencing electric shocks.
4.Elements that has constant chemical composition and characteristic properties are known as pure substances.
ex-oxygen ,nitrogen ,etc.
whereas, mixture is a combination of two or more elements.
ex-carbon dioxide, carbon mono oxide.
5.By heating the solution we can dissolve an additional amount of solute in a saturated solution.
6.Since distilled water doesn't contain its own minerals, it has a tendency to pull them from whatever it touches to maintain a balance. So when you drink distilled water, it may pull small amounts of minerals from your body, including from your teeth.
hope it will be helpful for you..
good luck