Atomic Structure and Periodic Table

Question 1

element symbol of Carbon

Answer 1

C

Question 2

Atomic number of carbon

Answer 2

6

Question 3

atomic mass of carbon

Answer 3

12.011

Question 4

atomic mass of silicon

Answer 4

28.086

Question 5

element symbol of silicon

Answer 5

Si

Question 6

atomic number of silicon

Answer 6

14

Question 7

How will you draw a bohr model of atom using table

Answer 7

? look at page 115

Question 8

Who developed periodic table

Answer 8

Mendeleev made it needing best way to show 63 elements

Question 9

periodic table

Answer 9

arranges elements in columns based of properties that repeat from row to row.

Question 10

Periods

Answer 10

each row in the table of elements is a period.

the number of elelments per period depends on the orbitals for each element.

Question 11

Groups

Answer 11

Each column on the table is a group - atomic numbers are used to arrange elements into groups.

Question 12

Elements are classified as metals, nonmetals and

Answer 12

metalloids

Question 13

Metals are

Answer 13

good conductors of electric current and heat.

Question 14

nonmetals

Answer 14

elements that are poor conductors of heat and electric current

Question 15

metalloids

Answer 15

elements with properties that fall between those of metals and nonmetals.

Question 16

Group 1A are alkali metals

Answer 16

reactivity for theses increases from top to bottom

Question 17

GROUP 2A are alkaline earth metals

Answer 17

harder than metals in group 1A they react with water

Question 18

Group 3A is aLUMINUM

Answer 18

it is a good conductor of electric current - strong and light weight

Question 19

Group 4A

Answer 19

nonmental - carbon - reactions we have in our body cells

Question 20

Group 5A

Answer 20

Nitrogen family

Question 21

Group 6A

Answer 21

Oxygen family - the element we have most in Earth’s crust

Question 22

Group 8A

Answer 22

noble gases - colorless and odorless not reactive!!!!!

Question 23

chemical bond

Answer 23

force that holds atoms or ions together

Question 24

ionic bond

Answer 24

force that forms when electrons are transformed from one atom to another

Question 25

ionic compound

Answer 25

has a strong attraction among ions within a crystal lattice

Question 26

covalent bond

Answer 26

is a chemical bond where 2 atoms share a pair of balence electrons