Unit 3 Atomic Structures & Unit 4 Electrons in Atoms Test

Question 1

The diagram shows a neutral atom of an element from the periodic table. What element is shown?

Accepted Answer

Sodium

Question 2

An electron has a ___________ charge.

Accepted Answer

Negative

Question 3

What fundamental force holds quarks together to form particles such as protons and neutrons?

Accepted Answer

Strong Nuclear Force.

Question 4

Who is the Half-Blood Prince?

Accepted Answer

Severus Snape

Question 5

Y can't be broken down. Z can be broken down by chemical change. What are these substances?

Accepted Answer

Substance Y is an element, and substance Z is a compound.

Question 6

In the late 1800s, experiments using cathode ray tubes led to the discovery of the

Accepted Answer

Electron.

Question 7

Which of the following types of electromagnetic radiation has the shortest wavelength?

Accepted Answer

Ultraviolet

Question 8

According to the Pixar Theory, who does Boo grow up to be?

Accepted Answer

The Witch from Brave

Question 9

How many neutrons does Sodium-23 have?

Accepted Answer

12

Question 10

Which atom in the ground state contains a partially filled 3 p orbital?

Accepted Answer

Aluminum

Question 11

What is the mass number for Arsenic-60?

Accepted Answer

60

Question 12

Which statement describes the relative energy of the electrons in the shells of a calcium atom?

Accepted Answer

third shell has more energy than the second shell.

Question 13

The modern model of the atom shows that electrons are

Accepted Answer

found in regions called orbitals.

Question 14

Which statement correctly describes a sample of gas confined in a sealed container?

Accepted Answer

It takes the shape & volume of any container it is in.

Question 15

When an electron in this atom moves from the third shell to the second shell, energy is

Accepted Answer

emitted by the electron.

Question 16

Which is the correct order of historical developments leading to the modern model of the atom?

Accepted Answer

Hard sphere. Empty space. Electrons are outside the nucleus.

Question 17

2 atoms contain 6 protons. One has 6 neutrons and one has 8 neutrons. These atoms are

Accepted Answer

Isotopes of the same element.

Question 18

What is the length between same points on concurrent waves called?

Accepted Answer

Wavelength

Question 19

Which statement describes a chemical property of aluminum?

Accepted Answer

Aluminum reacts with sulfuric acid.

Question 20

Which of the following terms represents the number of waves passing a given point each second?

Accepted Answer

Frequency

Question 21

Who am I?

Accepted Answer

Kylo Ren

Question 22

Which form of electromagnetic radiation is more energetic than ultraviolet rays?

Accepted Answer

X-rays

Question 23

What force holds the particles in a nucleus together?

Accepted Answer

Strong Nuclear Force.

Question 24

Which conclusion was a direct result of the gold foil experiment?

Accepted Answer

Atom is mostly empty space with a positively charged nucleus

Question 25

Which of the following best explains the bright-line emission spectrum of an element?

Accepted Answer

Electrons transitioning between energy levels in the element

Question 26

The lines on the emission spectrum of an atom correspond to which of the following?

Accepted Answer

Photons that are emitted by electrons.

Question 27

What is the electron configuration of a Mn atom in the ground state?

Accepted Answer

1s22s22p63s23p64s23d5

Question 28

An element's periodic table identity is defined by its number of

Accepted Answer

Protons

Unit 3 Atomic Structures & Unit 4 Electrons in Atoms Test

Questions 28

Unit 3 Atomic Structures & Unit 4 Electrons in Atoms Test

Questions 28