Chpt 29&30

Question 1

What is the definition of an atom.

Answer 1

It is the smallest particle of an element which still retains the properties of that element.

Question 2

What is an example of an element

Answer 2

Copper.

Question 3

What type of microscope allows you to see atoms.

Answer 3

Electric microscope.

Question 4

What is the name for the particles inside an atom.

Answer 4

Sub atomic particles.

Question 5

Which one of the sub atomic particles are negative

Answer 5

Electron.

Question 6

Which sub atomic partial is nuetral.

Answer 6

Neutron.

Question 7

Which sub atomic particle is positive

Answer 7

Proton

Question 8

What is the mass of
A) an electron
B) a proton
C) neutron

Answer 8

A) 1/200unit
B) 1unit
C)1unit

Question 9

What unit is the mass of the sub atomic particles measured in

Answer 9

G

Question 10

What did Neil Bohr propose.

Answer 10

That electrons travel on orbits around the nucleus.

Question 11

Are atoms + or -

Answer 11

0

Question 12

What is the ratio of protons and electrons in an atom

Support answer) (hence……………..

Answer 12

=

Hence atoms are nuetral.

Question 13

What is the name given to the number of protons in the nucleus.

Answer 13

Atomic number

Question 14

Define atomic number

Answer 14

The number of protons in the nucleus

Question 15

WhAt is the mass number of an atom

Answer 15

Number of protons + number of neutrons.

Question 16

Atomic number (form)

Answer 16

If the a.n. =22

That means there is 22 electrones and 22 protons in the element

Question 17

What is the formula for the number of neutrons

Answer 17

Mass number- atomic number

Question 18

What is the periodic table of elements

Answer 18

List of elements increasing in atomic number

Question 19

How are elements in the periodic table arranged

Answer 19

Elements with similar properties are arranged one under the other

Question 20

How many groups are there in the periodic table of elements

Answer 20

8

Question 21

What are alike between all the elements in the same group

Answer 21

They all have the same amount of electrons in the outer obit

Question 22

What are atoms?

Answer 22

Atoms are tiny particles that substances are made up of.