periodic table chemistry

Question 1

why is it called the periodic table?

Answer 1

because there are repeated patterns of properties

Question 2

what does malleable mean?

Answer 2

easy to bend

Question 3

what does ductile mean?

Answer 3

ability for metals to be drawn into wires

Question 4

what does sonourous mean?

Answer 4

ringing sounds

Question 5

what are metals helpful with?

Answer 5

good conductors of electricity

Question 6

what state are metals in?

Answer 6

a solid state

Question 7

what state are non-metals in?

Answer 7

a liquid or a gas

Question 8

what is a melting point?

Answer 8

the temperature where a substance melts

Question 9

do metals or non-metals have a higher boiling point?

Answer 9

metals have the higher melting point

Question 10

do metals or non-metals have the lower melting point?

Answer 10

non-metals

Question 11

who was john dalton?

Answer 11

he was the first person to propose atoms were small spherical balls

Question 12

what did john dalton do

Answer 12

he arranged the elements in order of their masses

Question 13

was Dalton right?

Answer 13

no his hypothesis was proved wrong

Question 14

what did john Newland do?

Answer 14

he arranged the known elements in order of mass but he noticed that the properties of every eighth element seemed similar.

Question 15

was john Newland right?

Answer 15

no he did not take into account that chemists were still discovering new ones

Question 16

what year did john dalton propose his hypothesis?

Answer 16

1806

Question 17

what year did john newland propose his hypothesis?

Answer 17

1864

Question 18

what are groups?

Answer 18

vertical columns

Question 19

where are metals on the pt

Answer 19

the left hand side

Question 20

how does the line descend for metalloids

Answer 20

in a staircase

Question 21

where are the non-metals

Answer 21

the right hand side

Question 22

What do elements in the same group have in common.

Answer 22

they have similar boiling, melting point and density which are examples of similar properties.

Question 23

what are periods?

Answer 23

horizontal rows

Question 24

who was Dmitri Mendeleev

Answer 24

he was a Russian scientist

Question 25

what did Dmitri do

Answer 25

he used patterns in the properties to create the very first periodic table

Question 26

why did Dmitri leave gaps in his table

Answer 26

it was so when new elements were discovered they could put them into the table

Question 27

What are the properties of metals

Answer 27

They are usually solid, shiny and malleable, ductile and sonorous, they also have a higher melting point

Question 28

What are the properties of non-metals

Answer 28

They are dull, brittle and are not sonorous, they are also poor conductors of electricity and have low melting points and low densities as well

Question 29

What does brittle mean

Answer 29

Brittle means easy to break

Question 30

What is a metal-oid

Answer 30

A metal-oid is a semi-metal which has properties of both metals and non-metals

Question 31

What are some metal-oids

Answer 31

Silicon, asaline and boron

Question 32

in the periodic table do the atomic mass increase as you move across a period?

Answer 32

yes

Question 33

what does strontium and nitrogen make?

Answer 33

it makes strontium nitrate