WEEK 1

Question 1

What is matter?

Answer 1

1. All matter consists of particles known as atoms
2. Atoms are indestructible
3. In pure elements atoms are identical
4. Different elements differ in properties

Question 2

What constitutes the atom of an element?

Answer 2

The number of protons determines which element it is

Question 3

What are reactions?

Answer 3

reactions are where bonds between atoms break and reform into different arrangements.

Question 4

What forms bonds?

Answer 4

electrons

Question 5

What are the two types of electrons?

Answer 5

• Core electrons=do not participate in bonding

- Valence electrons=outer electrons that determine type of bond

Question 6

What is the number of electrons each shell can hold?

Answer 6

-2,8,8,18,18,32,32

Question 7

What is the Octet rule?

Answer 7

-atoms are very stable when the have a full outer shell

Question 8

Which group of elements has full outer shells?

Answer 8

the nobel gases, group 18

Question 9

What are ionic bonds?

Answer 9

ionic bonds are caused by electrostatic attraction between a cation and an anion. can be elements or compounds

Question 10

Rules to naming salts

Answer 10

Cation=first one uses elements name
Anion=second name replace end with -ide
Anion(if polyatomic)with oxygen, -ite or -ate

Question 11

What are covalent bonds?

Answer 11

covalent bonds are where atoms share valence electrons to fill there outer shells

Question 12

Define homonuclear

Answer 12

molecules have all the same element covalently bonded

Question 13

Define heteronuclear

Answer 13

molecules have more than one element bonded together