Answer these
1. Name three elements.
2. Name two compounds.
3. Why does matter not fall apart even though it is made of tiny particles
4. Mention two chemical changes.
5. Explain why a change in the state of matter is not a chemical change.
6. What makes solids have a fixed shape and a fixed volume?
Answers
Answer:
1. Oxygen,silicon and aluminium.
2. Salt - formula : NaCI = Sodium + Chlorine.
3. If everything from people to planets is made of tiny subatomic particles, why don't they fall apart and crumble into piles of particles?....Particles "stick" together by interacting with one another in complex ways. More specifically, they exert what we call forces on each other.
4. Examples of chemical changes are burning, cooking,rusting and rotting.
5. They change depending upon thier chemical make up and what is done to them. For example, a physical change does not result in the formation of new substances. Physical changes alter only the size,shape,form or matter state of a material. ... In a chemical change, a new substance is formed.
6. Solids have a definite volume and shape because particles in a solid vibrate around fixed locations. ... The kinetic theory of matter states that particles of matter are always in constant motion.
This answer will help u follow me and mark me as brainlist.
Explanation:
1)Hydrogen, oxygen, silicon, and aluminum
2)Water - Formula: H2O = Hydrogen2 + Oxygen
Salt - Formula: NaCl = Sodium + Chlorine