Chemistry AS- UNIT 1 quiz

Definition of Atomic number...

The atomic number of an element is the number of electrons in the nucleus of an atom of that element.

The atomic number of an element is the number of protons in the nucleus of an atom of that element.

The atomic number of an element is the number of neutrons in the nucleus of an atom of that element.

Definition of mass number...

The mass number of an atom is the sum of the number of protons and the number of neutrons in the nucleus of that atom

The mass number of an atom is the sum of the number of protons in the nucleus of that atom

The mass number of an atom is the sum of the number of protons and the number of electrons in the nucleus of that atom

What is an isotope?

Isotopes are of the same element with different proton numbers

Isotopes are of the same element with different amounts of electrons

Isotopes are of the element with different amounts of neutrons

What is a mass spectrometer?

A mass spectrometer measures the masses of atoms and molecules. It produces negative ions that are deflected by a magnetic field according to their mass-to-charge ratio. It calculates the relative abundance of each neg' ion and displays this as a %%

A mass spectrometer measures the masses of atoms and molecules. It produces positive ions that are deflected by a magnetic field according to their mass-to-charge ratio. It calculates the relative abundance of each pos' ion and displays this as a %%

A mass spectrometer determines chemical properties of a unknown compound.

Which two particles are positive ions?

P=17, N=18, E=18

P=11, N=14, E=10

P=12, N=12, E=12

P=19, N=21, E=18

Which two particles are negative ions?

P=17, N=18, E=18

P=11, N=14, E=10

P=35, N=44, E=36

P=19, N=21, E=18

How many electrons can a P sub shell hold?

How many electrons can a D sub shell hold?

How many electrons can a F sub shell hold?

How many electrons can the first quantum shell hold?

How many electrons can the second quantum shell hold?

How many electrons can the third quantum shell hold?

What is Hund's rule?

Electrons will pair up before occupying the orbitals

Electrons cannot occupy the same orbital unless they have opposite spins

Electrons will occupy the orbitals singly before pairing takes place

What is the Pauli Exclusion Principle?

Two electrons cannot occupy the same orbital unless they have the same spins

Two electrons cannot occupy the same orbital unless they have opposite spins

Three electrons cannot occupy the same orbital unless they have the same spins

The electronic configuration of an atom shows the number of protons in each sublevel in each energy level of an atom

True

False

A quantum shell defines the energy level of an electron

True

False

State 3 factors that determines the magnitude of the first ionisation energy

What is in the S-block?

Transition Metals

Group 7 and 8

Group 1 and 2

Group 1

Which 2 groups ignore the general rule for first ionisation energy down a group?

Group 8 (0)

Group 7

Group 3

Group 4

What is in the D block?

Transition Metals

Groups 1 and 2

Groups 3 to 8 inclusive

What's in the P block?

Transition Metals

Group 1

Groups 3 to 8 inclusive

Explain why the chemical properties of elements in Group 1 are very similar

Because they're all in group 1

Because they like each other

Because they are all in the S-block

Because they have the same outer electronic configuration

Elements within a group will have completely different chemical properties?

True

False

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