Quiz about Unit 2: Atoms, Periodic Table and Bonding

Question 1

Question 1.

Accepted Answer

Y

Answer

W

Answer

X

Answer

Z

Question 2

Question 2.

Accepted Answer

Question 3

A neutral atom of which element contains 10 electrons?

Accepted Answer

neon

Answer

boron

Answer

fluorine

Answer

lithium

Question 4

Question 4.

Accepted Answer

ion

Answer

atom

Answer

isomer

Answer

quark

Question 5

Which statement BEST describes the characteristic shared by three isotopes of an element?

Accepted Answer

The isotopes share the same number of protons.

Answer

The isotopes share the same chemical stability.

Answer

The isotopes have the same atomic mass.

Answer

The isotopes have the same number of neutrons.

Question 6

Which magnesium ion is represented in the model?

Accepted Answer

Question 7

Which statement is true about atoms?

Accepted Answer

Some atoms lack a neutron.

Answer

Some atoms only contain electrons.

Answer

Some atoms only contain neutrons.

Answer

Some atoms lack a nucleus.

Question 8

In order to determine if two atoms are copper (Cu) atoms, what must be the same for each?

Accepted Answer

the number of protons

Answer

the number of valence electrons

Answer

the charge of the atom

Answer

the size of the atom

Question 9

Which model represents a particle with no charge?

Accepted Answer

Question 10

Looking at the nuclear notations below, what is the neutron number of both of the elements below? What is the relationship of the two elements below?

Accepted Answer

U-235 has 143 neutrons, U-238 has 146 neutrons and they are isotopes of each other.

Answer

U-235 has 235 neutrons, U-238 has 238 neutrons and they are isotopes of each other.

Answer

U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other.

Answer

U-235 and U-238 have 92 neutrons and they are ions of each other.

Question 11

Metals would most likely form which kind of ion and why?

Accepted Answer

Cations- they would lose electrons

Answer

Cations- they would gain electrons

Answer

Anions- they would gain electrons

Answer

Anions- they would lose electrons

Question 12

From its location in the Periodic Table, which of the following elements could be combined with a semiconductor so that scientists can create computer chips faster than germanium computer chips?

Accepted Answer

Gallium, Ga (atomic # 31), because it is a metal.

Answer

Astatine, At (atomic # 85) because it is a metalloid just as germanium.

Answer

Selenium, Se (atomic # 34), because it is in the same period as germanium.

Answer

Boron, B (atomic # 5), because it is the first of all metalloids in the Periodic Table.

Question 13

At which location in this periodic table would the element most likely be found?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 14

Which best describes the mistake Erika made?

Accepted Answer

Most metals are malleable, and most nonmetals are not malleable.

Answer

Most metals have low melting points, and most nonmetals have high melting points.

Answer

Most metals are poor conductors, and most nonmetals are good conductors.

Answer

Most metals are not hard, and most nonmetals are hard.

Question 15

Which element is LEAST likely to be metallic?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 16

Paul made a mistake on his list. Which best describes the mistake Paul made?

Accepted Answer

Alkaline earth metals do not gain two electrons; they lose two electrons.

Answer

Alkaline earth metals are not found in group two; they are found in group one.

Answer

Alkaline earth metal ions will not be negative two; the ions will be positive two.

Answer

Alkaline earth metals do not include elements Be, Mg, and Ca; they include Co, Ni, and Cu.

Question 17

The diagrams show part of the periodic table of the elements. The shaded areas represent a general trend in the number of valence electrons in the elements. The lighter shading indicates fewer valence electrons and the darker shading indicates more valence electrons. Which diagram BEST shows the relationship between the elements and the number of valence electrons?

Accepted Answer

Question 18

Using the information in the Periodic Table, what could you infer about the type of ions potassium (K) and selenium (Se) form?

Accepted Answer

Potassium forms positive ions because it tends to give up its valence electrons, and selenium forms negative ions because it attracts electrons from another atom.

Answer

Potassium forms positive ions because it tends to hold its valence electrons, and selenium forms negative ions because it tends to give up its valence electrons.

Answer

Potassium forms negative ions because it tends to give up its valence electrons, and selenium forms positive ions because it tends to hold its valence electrons.

Answer

Potassium forms negative ions because it attracts electrons from another atom, and selenium forms positive ions because it tends to give up its valence electrons.

Question 19

Which element reacts most similarly to chlorine? Why?

Accepted Answer

fluorine because they both have seven valence electrons

Answer

sulfur because they are both located in the same period

Answer

sulfur because they both gain two electrons to form anions

Answer

fluorine because they are both gases at room temperature

Question 20

Using the information in the Periodic Table, how would you rank the elements rubidium (Rb), antimony (Sb), and iodine (I) in order of increasing number of valence electrons?

Accepted Answer

Antimony has a lower number of valence electrons than iodine but a greater number than rubidium.

Answer

Antimony has a greater number of valence electrons than iodine but a lower number than rubidium.

Answer

Iodine has a lower number of valence electrons than rubidium but a greater number than antimony.

Answer

Rubidium has a greater number of valence electrons than antimony but a lower number than iodine.

Question 21

A student looking for an element that will bond with sodium (Na) knows that table salt is a compound of sodium and chlorine (Cl). Based on this information, which of the following elements would MOST likely bond with sodium?

Accepted Answer

bromine (Br)

Answer

argon (Ar)

Answer

calcium (Ca)

Answer

potassium (K)

Question 22

A student knows that hydrogen (H) atoms and oxygen (O) atoms combine to form water The student correctly predicts that hydrogen (H) and sulfur (S) will combine to form hydrogen sulfide On what is this prediction MOST likely based?

Accepted Answer

Oxygen and sulfur are in the same family with the same number of valence electrons.

Answer

Oxygen and sulfur are in the same period or row with the same number of neutrons.

Answer

Oxygen and sulfur are in the same period or row with the same number of protons.

Answer

Oxygen and sulfur are in the same family with the same number of energy levels.

Question 23

Kerry's teacher gave her two compounds for her to compare and analyze for identification.

Substance A was a colorless solid.
Substance B was a colorless liquid.

When Kerry heated both of the compounds, Substance B had a boiling point that was significantly lower than the melting point of Substance A.

Based on the information provided, which of the following statements are TRUE?

Accepted Answer

Substance A is most likely an ionic compound because it has a higher melting point than the boiling point of Substance B.

Answer

There is not enough information provided to make conclusions about Substance A and Substance B.

Answer

Since it is liquid at room temperature, Substance B is most likely an ionic compound.

Answer

It would take more energy to break the bonds in Substance B, in order to overcome the strong electrostatic forces holding the bonds together.

Question 24

What can she conclude about the elemental compositions of ionic compounds?

Accepted Answer

They contain metallic and nonmetallic elements.

Answer

They contain metallic and transition elements.

Answer

They contain semimetallic and metallic elements.

Answer

They contain semimetallic and nonmetallic elements.

Question 25

A group of students is studying chemical bonds. They learned that electrons are shared between covalent bonds and transferred from one atom to another to form ionic bonds. They investigate the types of chemical bonds in five samples. During the first investigation, they test how long it takes for each sample to melt. During the second investigation, they test each the conductivity of each sample by connecting it to a circuit. The results of each test are recorded in the data table.

Accepted Answer

Sample 2 and Sample 3

Answer

Sample 1 and Sample 5

Answer

Sample 2 and Sample 5

Answer

Sample 3 and Sample 4

Question 26

What can she conclude about the elemental compositions of covalent molecules?

Accepted Answer

They contain nonmetallic elements.

Answer

They contain solid and gas elements.

Answer

They contain metallic and nonmetallic elements.

Answer

They contain metallic elements.

Question 27

Compared with compounds such as sodium chloride, the wax produced by bees has a low boiling point. Which BEST explains this property of beeswax?

Accepted Answer

It is made from covalently bonded compounds.

Answer

.

It is a solid at room temperature.

Answer

It has a crystalline ionic structure

Answer

It is composed of more than one element

Question 28

What can she conclude about the elemental compositions of ionic compounds?

Accepted Answer

They contain metallic and nonmetallic elements.

Answer

They contain metallic and transition elements.

Answer

They contain semimetallic and metallic elements.

Answer

They contain semimetallic and nonmetallic elements.

Question 29

Which elements will bond ionically with barium such that the formula would be written as BaX

Accepted Answer

Chlorine, Iodine, and Flourine

Answer

Nitrongen, Chlorine, and Sodium

Answer

Hydrogen, Bromine, and Aluminum

Answer

Oxygen and Sulfur

Question 30

Question 30.

Accepted Answer

Question 31

Based on the model shown, what is is the formula for a compound containing only Li and O?

Accepted Answer

Li2O

Answer

LiO

Answer

LiO2

Answer

Li2O2

Question 32

What is the chemical formula for the stable ionic compound formed between aluminum and oxygen?

Accepted Answer

Al2O3

Answer

ALO

Answer

Al3O3

Answer

Al3O2

Question 33

Question 33.

Accepted Answer

dichlorine monoxide

Answer

chlorine oxide

Answer

dichlorine oxygen

Answer

dichlorine oxide

Question 34

Which is the chemical formula for dinitrogen monoxide?

Accepted Answer

N2O

Answer

NO2

Answer

N2O3

Answer

NO

Unit 2: Atoms, Periodic Table and Bonding

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