Quiz about Chemistry benchmark 2020-2021

Question 1

Definite volume but not definite shape

Accepted Answer

liquid

Answer

solid

Answer

gas

Answer

solid, liquid and gas

Question 2

Change of state from a solid directly to a gas is called

Accepted Answer

sublimation

Answer

deposition

Answer

melting

Answer

evaporation

Question 3

water is heated and changed to steam

Accepted Answer

physical change

Answer

chemical change

Question 4

Temperature is the measurement of which type of energy?ABCD

Accepted Answer

kinetic

Answer

chemical

Answer

mechanical

Answer

potential

Question 5

How close a measurement is to the true value is called..

Accepted Answer

Accuracy

Answer

Precision

Answer

Significant

Answer

Estimate

Question 6

What is the volume of Object X?

Accepted Answer

25.0 cm3

Answer

10.0 cm3

Answer

15.0 cm3

Answer

20.0 cm3

Question 7

What is this?

Accepted Answer

Graduated Cylinder

Answer

Measuring tube

Answer

Test tube

Answer

Pipette

Question 8

Italian Salad Dressing

Accepted Answer

heterogeneous mixture

Answer

homogeneous mixture

Question 9

Definite volume but not definite shape

Accepted Answer

liquid

Answer

solid

Answer

gas

Answer

solid, liquid and gas

Question 10

Each of these beakers contains the same substance, they are in different states. Which has the lowest kinetic energy?

Accepted Answer

solid

Answer

liquid

Answer

gas

Answer

can't be determined because I don't know the temperature

Question 11

Which of the following is true about halogens?

Accepted Answer

they have seven valence electrons

Answer

they have one valence electron

Answer

they have two valence electrons

Answer

they have eight valence electrons

Question 12

Which of the following is evidence of a chemical change?

Accepted Answer

change of chemical composition

Answer

change of state

Answer

change of shape

Answer

change of size

Question 13

Where is most of the atom's mass located?

Accepted Answer

nucleus

Answer

protons

Answer

neutrons

Answer

electrons

Question 14

The atomic number of an atom represents:

Accepted Answer

# of protons and electrons (if atom is neutral)

Answer

# of protons only

Answer

# of electrons only

Answer

# of protons, electrons, and neutrons

Question 15

An electron is

Accepted Answer

negatively charged

Answer

positively charged

Answer

neutral

Question 16

atomic number is

Accepted Answer

the number of protons

Answer

the number of electrons

Answer

the number of neutrons

Answer

the location of an atom on the periodic table

Question 17

An elements is

Accepted Answer

a substance that cannot be split into simpler substances

Answer

a substance that can be split into simpler substances

Question 18

A pure substance that is a compound is made out of

Accepted Answer

particles of more than one type of atom

Answer

particles of the same type of atom

Answer

a mixture of two or more substances that can be physically separated

Question 19

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants

are broken, and

Accepted Answer

atoms rearrange and form new bonds to make the products.

Answer

atoms remain the same and do not form new bonds to make the proudcts

Question 20

To neutralise an acid you add a

Accepted Answer

base

Answer

acid

Answer

Ph indicator

Answer

equal amount of water

Question 21

A Ph scale of7/8 is

Accepted Answer

neutral

Answer

acidic

Answer

basic

Question 22

The type of reaction that releases energy as heat is called

Accepted Answer

exothermic

Answer

endothermic

Answer

respiration

Answer

photosynthesis

Question 23

The group number tells us how many _________ there are in an element.

Accepted Answer

valence electrons

Answer

groups

Answer

energy levels

Answer

chemicals

Question 24

The inner energy level can only hold ______ electrons.

Accepted Answer

2

Answer

1

Answer

0

Answer

18

Question 25

Which particle does not contribute mass to the atom?

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Answer

Nucleus

Question 26

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 27

What is the number of protons that the element in this image contain?

Accepted Answer

7

Answer

14

Answer

15

Answer

18

Question 28

How do the following two elements bond together?

Al³⁺ O^2-

Accepted Answer

Al2O3

Answer

AlO

Answer

Al3O6

Answer

Al3O2

Question 29

The proper formula for magnesium hydroxide:

Accepted Answer

Mg(OH)2

Answer

MgOH

Answer

Mg2OH

Answer

Mg2OH2

Question 30

The rate at which a radioactive element decays is its ____.

Accepted Answer

half life

Answer

quarter life

Answer

whole life

Answer

wonderful life

Question 31

How many elements are in C₆H₁₂O₆?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 32

A molecule is made up of

Accepted Answer

one or more atoms.

Answer

one or more mixtures.

Answer

one or more compounds.

Answer

one or more solutions.

Question 33

Which scientific law states that an atom cannot be created or destroyed:

Accepted Answer

Law of Conservation of Mass

Answer

Law of Conservation of Matter

Answer

Law of Gravity

Answer

Law of Motion

Question 34

In the atom diagram shown, E is pointing to

Accepted Answer

An electron

Answer

a proton

Answer

a neutron

Answer

the nucleus

Question 35

Which of the following is described as the basic unit of matter?

Accepted Answer

Atom

Answer

Element

Answer

Molecule

Answer

Compound

Question 36

What charge does an electron have?

Accepted Answer

Negative

Answer

Positive

Answer

Neutral

Answer

Contrated

Question 37

In this chemical equation, the elements in red are the_______.

Accepted Answer

Reactants

Answer

Products

Answer

Subscripts

Answer

Coefficients

Question 38

Covalent bonds form when

Accepted Answer

pairs of electrons are shared between two atoms.

Answer

the electronegativity difference between two atoms is very large.

Answer

electrons are completely transferred between two atoms.

Answer

ions are held together by opposite charges.

Question 39

An ionic bond forms when

Accepted Answer

valence electrons are transferred from one atom to another, forming charged ions that are then pulled together by attraction between opposite charges

Answer

valence electrons are shared back and forth (move between) two atoms.

Answer

a sea of mobile electrons surround the cations and they then become negativly charged

Answer

none of the above

Question 40

How many protons does this atom have?

Accepted Answer

5

Answer

2.5

Answer

6

Answer

10.811

Question 41

The ratio of mass and volume of a substance is its:

Accepted Answer

density

Answer

length

Answer

weight

Answer

chemical formula

Question 42

In an atom, _____ are found in the nucleus, and _______ are found orbiting the nucleus.

Accepted Answer

protons and neutrons; electrons

Answer

protons; neutrons

Answer

neutrons; electrons

Answer

electrons; protons and neutrons

Question 43

The atomic number of an atom represents:

Accepted Answer

# of protons and electrons (if atom is neutral)

Answer

# of protons only

Answer

# of electrons only

Answer

# of protons, electrons, and neutrons

Question 44

Why are noble gases non-reactive?

Accepted Answer

their valence orbitals are completely occupied

Answer

they are ionic in nature

Answer

they have atoms which are bonded to one another

Answer

none of the above

Question 45

How does a balanced chemical equation support the law of conservation of matter?

Accepted Answer

It shows that all the matter present at the beginning of a reaction is still there at the end of a chemical reaction.

Answer

It shows that matter is both created and destroyed in a chemical reaction.

Answer

It shows that matter was created in a chemical reaction.

Answer

It shows that matter was destroyed in a chemical reaction.

Question 46

Helium, Neon, Argon, Krypton, Xenon, and Radon make up the last column on the periodic table and all have similar properties. What do we call these elements?

Accepted Answer

a family

Answer

cousins

Answer

sisters

Answer

a period

Question 47

Matter is:

Accepted Answer

anything that has mass and takes up space

Answer

anything that has mass

Answer

anything that takes up spave

Answer

anything that does NOT have mass and does NOT take up space

Question 48

Which of the substances in the chart below is the most acidic?

Pure water - 7.0

coffee - 5.0

Apple juice: 3.5

cola: 2.5

Accepted Answer

Cola

Answer

Apple juice

Answer

Pure water

Answer

Coffee

Chemistry benchmark 2020-2021

50 questions

Definite volume but not definite shape

Change of state from a solid directly to a gas is called

water is heated and changed to steam

Temperature is the measurement of which type of energy?ABCD

How close a measurement is to the true value is called..

What is the volume of Object X?

What is this?

Italian Salad Dressing

Definite volume but not definite shape

Each of these beakers contains the same substance, they are in different states. Which has the lowest kinetic energy?

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