Properties of Charges & Dalton's Atomic theory

Question 1

Properties of Charges

Answer 1

1. There are two types of charges, positive and negative
2. Unlike charges attract each other (thus, positive and negative charges attract each other). (+) –> <– (-)
3. Like charges repel each other (thus, a positive charge repels a positive charge, and a negative charge repels a negative charge). (+)<– –>(+), (-) <– –>(-)
4. The less the distance between two charges the greater the force of attraction between unlike charges or repulsion between two identical charges
5. Charge may be transferred from one object to another when the two objects are touching or at times when they are very close together in a medium that conducts charge.

Question 2

Dalton’s Atomic Theory

Answer 2

1. Elements are composed of extremely small particles called atoms, which are indivisible and indestructible
2. All atoms of a given element are identical, having the same size, mass, and chemical properties
3. The atoms of one element are different from the atoms of all other elements
4. Compounds are composed of atoms of more than one element. The relative number of atoms of each element in a given compound is always the same.
5. Chemical reactions only involve the rearrangement of atoms. Atoms are more created or destroyed in chemical reactions