Paper 1 Practice test

Question 1

What is always correct about the numbers of protons, electrons, and neutrons in an atom?

Answer 1

The number of protons equals the number of electrons

Question 2

What is the electron configuration of vanadium?

Answer 2

1s^1 2s^2 2p^6 3s^2 3p^2 3d^3 4s^2

Question 3

What quantities are all the same for all atoms of chlorine?

Answer 3

Protons and electrons

Question 4

What is right about the isotopes of chlorine: 35Cl and 37Cl?

Answer 4

They have the same chemical properties and atomic number

Question 5

What describes the visible emission spectrum of hydrogen?

Answer 5

A series of lines converging at lower energy

Question 6

An ion has an electron configuration of 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10, what ion is it?

Answer 6

Cu+

Question 7

How many electrons does the ion 31/15P^3- contain?

Answer 7

18

Question 8

What is correct about 63Cu^2+ and 65Cu+?

Answer 8

They both have the same number of protons

Question 9

How many protons, electrons and neutrons are in each atom of 31P?

Answer 9

Protons = 15
Neutrons = 16
Electrons = 15

Question 10

What is the correct features for UV and IR in the electromagnetic spectrum

Answer 10

UV = High energy and short wavelength
IR = Low energy and low frequency

Question 11

What is the definition of the mass number of an atom?

Answer 11

The total number of neutrons and protons in the nucleus of an atom

Question 12

What is the electron configuration of the Cr2+?

Answer 12

[Ar] 3d^4 4s^0

Question 13

What describes all homogenous mixtures?

Answer 13

Any sample has the same ratio as the components

Question 14

What is the change of state from a gas to solid?

Answer 14

Deposition

Question 15

Which quantities are different for 128/52 Te and 128/53 I-?

Answer 15

Protons, neutrons, and electrons

Question 16

What is the relative atomic mass of a sample of chlorine containing 70% of the 35Cl isotope and 30% of the 37Cl isotope?

Answer 16

35.6

Question 17

How are emission spectra formed?

Answer 17

When photons are emitted when promoted electrons return to a lower energy

Question 18

What transition in the hydrogen atom emits the least energy?

Answer 18

n= 4 to n=3

Question 19

What Is the maximum number of electrons that can occupy the 4th main energy level in an atom?

Answer 19

32

Question 20

What is the max number of electrons that can occupy a p orbital?

Answer 20

2

Question 21

What is the ground state electron configuration of chromium?

Answer 21

[Ar] 4s^1 3d^5

Question 22

Principle energy level number and number of valence electrons of bismuth (Bi = 83)?

Answer 22

PEL# = 6 VE# = 5