ch 2 part 2 reviews

Question 1

atom with vacancy versus a full atom :

Answer 1

with vacancy can interact with other elements ,atom with full shell is stable and not tend to interact with other element

Question 2

electron fill the closest shell to nucleous and then succesive shell (true or false )

Answer 2

true

Question 3

carbon interaction :

Answer 3

-air = oxygen +carbon
protein in hair : carbon

Question 4

Atoms can bond together to form molecules and compounds such as :

Answer 4

NH3 , ch2 , h2o

Question 5

there are three ways to represent molecules :

Answer 5

lewis structure
ball and stick model
space filling model

Question 6

groups of atoms that held togather by bonds

Answer 6

molecules

Question 7

occur when chemical bond are made or broken or change a substance is composition

Answer 7

chemical reactions

Question 8

element are ___________with a full outermost electron shell

Answer 8

most stable

Question 9

in chemical equation there are _____________and ______________

Answer 9

reactant and product

Question 10

ingrediant in chemical reaction

Answer 10

reactant

Question 11

compound formed after reactant combine

Answer 11

product

Question 12

how does chemical bond form :

Answer 12

1-form due to attraction between atoms
2-can also result from attraction of opposite charge between atoms

Question 13

valence can result from __________and__________and_____________

Answer 13

sharing , accepting , donating

Question 14

the differance between ionic and coavlent and hydrogen bond :

Answer 14

ionic : metal and nonmetal high polarity
covalent : between nonmetal and between nonmetal with metalloid
hydrogen : interaction H with N , O , F

Question 15

exchange of one or more electron

Answer 15

ionic bond

Question 16

sharing of electron between atoms a strong bond

Answer 16

covalent bond

Question 17

a weak bond that hold two or more two polar coavlent compound togather

Answer 17

hydrogen