PSC YEAR 9 - Atomic Structure & Periodic Table

Question 1

The electronic configuration of the calcium atom is 2,8,8,2.

Accepted Answer

True

Question 2

The number of protons in an atom is indicated by the ______________ number.

Accepted Answer

atomic

Question 3

Name an element found in group one of the periodic table.

Accepted Answer

Lithium

Question 4

Who discovered that atoms have a central nucleus after conductuing his 'gold foil' experiment?

Accepted Answer

Rutherford

Question 5

Elements that have chemical and physical properties of both metals and nonmetals are called:

Accepted Answer

metalloids

Question 6

An alpha particle is similar in structure to:

Accepted Answer

a helium nucleus

Question 7

Oxygen = Atomic Number 8. What is the charge on the most common ion of oxygen?

Accepted Answer

2-

Question 8

Which one of the following is a metal element?

Accepted Answer

Sodium

Question 9

What is the atomic number of Oxygen?

Accepted Answer

8

Question 10

A column on the periodic table can also be called a:

Accepted Answer

group

Question 11

How many electrons can fit into the first energy level of an atom?

Accepted Answer

2

Question 12

Which one of the following is a Noble Gas?

Accepted Answer

Neon

Question 13

What is the electron configuration of a Neon atom (Atomic Number = 10)?

Accepted Answer

2, 8

Question 14

What is the atomic number of Magnesium?

Accepted Answer

12

Question 15

What is the mass number of the most common Oxygen isotope?

Accepted Answer

16

Question 16

How many electrons can fit into the second energy level of an atom?

Accepted Answer

8

Question 17

Elements on the modern periodic table are arranged according to their:

Accepted Answer

atomic number

Question 18

The half life of Iodine-125 is 60 days. How much of a 100g sample is left after 120 days?

Accepted Answer

25g

Question 19

What is the atomic number of Tungsten?

Accepted Answer

74

Question 20

What form of radiation can be stopped by a piece of paper?

Accepted Answer

Alpha Radiation

Question 21

The emission spectrum of an element is:

Accepted Answer

A series of coloured lines, unique to a particular element.

Question 22

Solar power generation is more efficient than nuclear power generation.

Accepted Answer

False

Question 23

What is the atomic number of Uranium?

Accepted Answer

92

Question 24

Two atoms with the same number of protons but a different number of neutrons are called:

Accepted Answer

isotopes

Question 25

I asked the guy sitting next to me if he had any sodium hypobromite. He said:

Accepted Answer

NaBrO

Question 26

The 'half-life' of a radioactive sample is the time taken for half of the nucleii in the sample to decay.

Accepted Answer

True

Question 27

Which element below has the lowest mass number?

Accepted Answer

Carbon

Question 28

Which list below shows the correct charges for subatomic particles?

Accepted Answer

p = +1 n = 0 e = -1

Question 29

A cation is:

Accepted Answer

An atom that has lost electrons

Question 30

Valence electrons are located:

Accepted Answer

in the outer energy level

Question 31

The sum of the number of protons and neutrons inside the nucleus is called the:

Accepted Answer

mass number

Question 32

What is the name of the scientist who developed the 'plum pudding' model of the atom?

Accepted Answer

Thomson

Question 33

What is the correct electron configuration for a Phosphorus atom? (Atomic Number = 15)

Accepted Answer

2, 8, 5

Question 34

Which subatomic particles are found inside the nucelus of an atom?

Accepted Answer

protons & neutrons

Question 35

Magnesium = Atomic Number 12. What is the charge on the most common ion of magnesium?

Accepted Answer

2+

Question 36

When atoms lose electrons they become charged and are called:

Accepted Answer

ions

Question 37

An atom, as shown on the periodic table, is neutral because it contains equal numbers of:

Accepted Answer

protons and electrons

Question 38

Carbon-12 and Carbon-14 are examples of _______________ for the carbon element.

Accepted Answer

isotopes

Question 39

A Rubidium isotope has atomic number 37 and mass number 85. How many neutrons does it contain?

Accepted Answer

48

Question 40

Which element below has the highest atomic number?

Accepted Answer

Lead

PSC YEAR 9 - Atomic Structure & Periodic Table

Questions 40

PSC YEAR 9 - Atomic Structure & Periodic Table

Questions 40