Quiz about Midpoint B2 Review

Question 1

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

Accepted Answer

7 g/cm3

Answer

7 mL

Answer

28 g/cm3

Answer

1/7 g/cm3

Question 2

Why do the liquids form different layers?

Accepted Answer

They have different densities.

Answer

They have different masses.

Answer

They have different volumes.

Answer

They are different temperatures.

Question 3

If an object has a density of .6 g/mL and you put it into water, will it sink or float?

Accepted Answer

float

Answer

sink

Question 4

If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?

Accepted Answer

sink

Answer

float

Question 5

The compound sucrose has a chemical formula of C12H22O11. How many elements are in one molecule of sucrose?

Accepted Answer

3

Answer

12

Answer

22

Answer

45

Question 6

An element contains

Accepted Answer

one kind of atom

Answer

two or more kinds of atoms

Answer

one kind of molecule

Answer

two or more kinds of molecules

Question 7

Which of the following is a noble gas?

Accepted Answer

argon

Answer

hydrogen

Answer

carbon dioxide

Answer

oxygen

Question 8

Which of the following is a compound?

Accepted Answer

CO

Answer

N

Answer

Na

Answer

Ca

Question 9

What type of property describes how a substance reacts when mixed with another substance?

Accepted Answer

chemical property

Answer

physical property

Question 10

Which of the following are physical properties? (select all correct answers)

Accepted Answer

electrical conductivity

Accepted Answer

density

Answer

reaction to acid

Answer

number of bonds with hydrogen

Question 11

Which of the following are signs of a chemical reaction? (choose all correct answers)

Accepted Answer

color change

Accepted Answer

a precipitate (solid) forms in a liquid

Answer

dissolving

Answer

freezing

Question 12

How many ELEMENTS are in one molecule of sulfuric acid?

(see chemical formula above)

Accepted Answer

3

Answer

2

Answer

6

Answer

7

Question 13

Which column of the Periodic Table contains the Noble gases?

Accepted Answer

column 18 (on the right)

Answer

column 1 (on the left)

Answer

column 4

Answer

column 13

Question 14

Which list below correctly identifies the elements and compounds from above?

Accepted Answer

The elements are: H and Pb

The compounds are: H2O and CN

Answer

The element is: H

The compounds are: H2O, Pb and CN

Answer

The elements are: H and H2O

The compounds are: Pb and CN

Answer

They are all compounds

Question 15

What do you call the substances you have before a reaction starts?

Accepted Answer

reactants

Answer

liquids

Answer

products

Question 16

The basic structural unit of an element.

Accepted Answer

atom

Answer

atomic mass

Answer

chemical formula

Answer

compound

Question 17

Exothermic reactions...

Accepted Answer

Release energy

Answer

Absorb energy

Answer

Release Color

Answer

Absorb Color

Question 18

In an endothermic reaction, heat is ...

Accepted Answer

taken in or absorbed

Answer

given out or released

Question 19

Which of these elements has an electron structure most similar to that of element X?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 20

Which pair of elements would most likely have similar properties?

Accepted Answer

oxygen (O) and sulfur (S)

Answer

Calcium (Ca) and cobalt (Co)

Answer

sodium (Na) and chlorine (Cl)

Answer

boron (B) and phosphorus (P)

Question 21

What element is this an atom of?

Accepted Answer

lithium

Answer

nitrogen

Answer

beryllium

Answer

carbon

Question 22

Most of the mass in an atom is made up of _____________________?

Accepted Answer

protons and neutrons

Answer

protons and electrons

Answer

neutrons and electrons

Answer

electrons and quarks

Question 23

What is the electrical charge of a proton?

Accepted Answer

1+

Answer

1-

Answer

neutral

Answer

2-

Question 24

What scientist is best known for his gold foil experiment?

Accepted Answer

Ernest Rutherford

Answer

J.J. Tomson

Answer

John Dalton

Answer

Democritus

Question 25

Who is the first scientist to think that the atom was the smallest unit of matter?

Accepted Answer

Democritus

Answer

J.J. Tomson

Answer

Ernest Rutherford

Answer

John Dalton

Question 26

What do neutrons most contribute to in an atom?

Accepted Answer

Mass

Answer

Atomic Number

Answer

Charge

Answer

Nothing

Question 27

How many electrons does Si contain? (click to see image)

Accepted Answer

14

Answer

28

Answer

2

Answer

4

Question 28

Horizontal rows on the periodic table are called?

Accepted Answer

Periods

Answer

Columns

Answer

Families

Question 29

Fluorine, chlorine, bromine, iodine, and astatine make up Group 17, the halogens. Why are these elements grouped together?

Accepted Answer

They are all very reactive nonmetals with similar chemical properties.

Answer

They are all nonreactive gases with similar physical properties.

Answer

Their atoms all have eight electrons in their outer energy levels.

Answer

They all have the same atomic number.

Question 30

Which of the following best describes the properties of metals?

Accepted Answer

shiny, malleable, and conductive

Answer

hard, brittle, and nonconductive

Answer

liquid, dark, and conductive

Answer

soft, oily, and very reactive

Question 31

How are the elements in the periodic table arranged?

Accepted Answer

by their atomic number

Answer

by their atomic mass

Answer

by their chemical symbol

Answer

by their chemical name

Question 32

What does the number of electrons in the outer level indicate about the element?

Accepted Answer

how reactive the element is

Answer

how malleable the element is

Answer

how brittle the element is

Answer

how ductile the element is

Question 33

vertical columns in the periodic table are _________ of elements with similar properties.

Accepted Answer

groups

Answer

periods

Question 34

what does the 6 represent?

Accepted Answer

atomic number

Answer

Atomic mass

Answer

chemical symbol

Answer

element name

Question 35

Elements on the right side of the of the zigzag line are normally?

Accepted Answer

non metals

Answer

metals

Answer

metalloids

Answer

rare earth metals

Question 36

How many electrons do atoms need to be stable?

Accepted Answer

8

Answer

1

Answer

2

Answer

6

Question 37

A negatively charged particle that moves around the nucleus is a(n)

Accepted Answer

electron

Answer

proton

Answer

neutron

Answer

quark

Question 38

How many electrons does Oxygen need to fill its outer shell?

Accepted Answer

2

Answer

3

Answer

4

Answer

1

Question 39

An element's identity is determined by the number of

Accepted Answer

protons.

Answer

electrons.

Answer

neutrons.

Answer

valence.

Question 40

Group 18 elements are known as the _____ _____ and have full valence shells.

Accepted Answer

noble gases.

Answer

royal gases.

Answer

supreme solids.

Answer

legit liquids.

Question 41

What period and group is Silver (Ag)?

Accepted Answer

Period 5, Group 11

Answer

Period 2, Group 1

Answer

Period 3, Group 16

Answer

Period 2, 14

Question 42

Which elements have the most similar chemical properties?

Accepted Answer

K and Na

Answer

K and Ca

Answer

K and Cl

Answer

K and S

Question 43

Which of the following is not a property of metals?

Accepted Answer

brittle

Answer

malleable

Answer

lustrous

Answer

conductive

Question 44

The alkali metals have how many valence electrons?

Accepted Answer

1

Answer

2

Answer

7

Answer

8

Question 45

What does the 1.00794 stand for?

Accepted Answer

atomic mass

Answer

Hydrogen

Answer

atomic number

Answer

atomic explosion

Question 46

Question 46.

Accepted Answer

valence electrons

Answer

energy levels

Answer

protons

Answer

neutrons

Question 47

What element is represented in this Bohr Model?

Accepted Answer

Lithium

Answer

Carbon

Answer

Hydrogen

Answer

Aluminum

Question 48

What group does this element belong to?

Accepted Answer

Group 1: Alkali metals

Answer

Group 18: Noble Gases

Answer

Group 2: Alkaline-Earth Metals

Answer

Group 17: Halogens

Question 49

A neutron has a charge of

Accepted Answer

No charge

Answer

+2

Answer

-1

Answer

+1

Question 50

How many valence electrons?

Accepted Answer

5

Answer

2

Answer

3

Answer

10

Question 51

The innermost energy level has a maximum of how many electrons?

Accepted Answer

2

Answer

1

Answer

6

Answer

8

Question 52

Ba ⁺³ and Cl^-

Accepted Answer

BaCl3

Answer

Ba3Cl

Answer

Ba3Cl3

Answer

BaCl

Question 53

What is the oxidation number for Be?

Accepted Answer

+2

Answer

+1

Answer

+3

Answer

+4

Question 54

If an atom had the same properties as fluorine (F), it would probably be located in

Accepted Answer

group 17.

Answer

period 1.

Answer

period 2.

Answer

group 2.

Question 55

If an atom has 12 positively charged particles, which of the following must it also have to be considered a neutral atom?

Accepted Answer

12 electrons

Answer

12 neutrons

Answer

12 protons

Answer

24 protons and neutrons

Question 56

The mass of one proton is greater than the mass of one...

Accepted Answer

electron

Answer

neutron

Question 57

The particles of the atom you can find by knowing the atomic number.

Accepted Answer

protons and electrons

Answer

neutrons

Answer

protons and neutrons

Answer

atomic mass

Question 58

Which letter represents an electron?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 59

Which letter represents the nucleus?

Accepted Answer

D

Answer

A

Answer

B

Answer

E

Question 60

What is the atomic number of the atom pictured?

Accepted Answer

9

Answer

10

Answer

18

Answer

19

Question 61

What is the chemical symbol for Mercury?

Accepted Answer

Hg

Answer

Fe

Answer

Co

Answer

Me

Question 62

The number 15 is the

Accepted Answer

atomic number

Answer

atomic mass

Answer

symbol

Answer

element name

Question 63

What is the Law of Conservation of Mass?

Accepted Answer

It states that no matter can be created or destroyed.

Answer

It states that no energy can be created or destroyed.

Answer

It states that matter can be created or destroyed.

Answer

It states that no sound can be created or destroyed.

Question 64

What is a coefficient?

Accepted Answer

The large number in front of a chemical formula.

Answer

The small number on the right of the chemical symbol.

Answer

The number in between the chemical symbols.

Answer

The number behind a chemical formula.

Midpoint B2 Review

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