Quiz about year 10 chem

Question 1

Question 1.

Accepted Answer

Groups

Answer

Periods

Question 2

Question 2.

Accepted Answer

Periods

Answer

Groups

Question 3

Question 3.

Accepted Answer

energy levels

Answer

valence electrons

Answer

protons

Answer

neutrons

Question 4

Question 4.

Accepted Answer

valence electrons

Answer

energy levels

Answer

protons

Answer

neutrons

Question 5

Question 5.

Accepted Answer

Same group

Answer

Same period

Question 6

Question 6.

Accepted Answer

Group 18

Answer

Group 1

Answer

Group 17

Answer

Group 2

Question 7

Question 7.

Accepted Answer

Group 1

Answer

Group 17

Answer

Group 18

Answer

Group 2

Question 8

Question 8.

Accepted Answer

Metals

Answer

Nonmetals

Answer

Metalloids

Question 9

Question 9.

Accepted Answer

Nonmetals

Answer

Metals

Answer

Metalloids

Question 10

Question 10.

Accepted Answer

Metalloids

Answer

Metals

Answer

Nonmetals

Question 11

The atomic number tells you what?

Accepted Answer

number of protons

Answer

number of electrons

Answer

number of neutrons

Answer

both electrons and protons in an atom.

Question 12

Which is a halogen?

Accepted Answer

Chlorine

Answer

Helium

Answer

Oxygen

Answer

Neptune

Question 13

Which is an alkali metal?

Accepted Answer

Sodium

Answer

Magnesium

Answer

Iron

Answer

Europium

Question 14

A horizontal row of elements in the periodic table.

Accepted Answer

period

Answer

column

Answer

group

Question 15

The simplest substance is..?

Accepted Answer

An element

Answer

Carbon

Answer

Water

Answer

A simple compound

Question 16

Rate of chemical reaction means

Accepted Answer

speed of reaction

Answer

amount of product formed

Answer

concentration of reacting particles

Answer

combining reactants with products

Question 17

Which factors increase the rate of a reaction.

Accepted Answer

all of these

Answer

increasing temperature

Answer

increasing concentration

Answer

increasing surface area

Question 18

Increase in temperature of the reactants can do one of the following

Accepted Answer

increase collision between the particles thus increasing the rate.

Answer

Slow collision frequency

Answer

Allow less effective collision between the particles

Answer

Neutralise the reaction

Question 19

Why does a catalyst increase the rate of reaction?

Accepted Answer

it reduces the activation energy of the reaction

Answer

it produces extra energy for the reactants

Answer

it increases the speed of the reactant particles

Answer

it increases the frequency of particle collisions

Question 20

Reactions that give out heat to the surrounding are classified as one of the following:

Accepted Answer

Exothermic

Answer

Spontaneous

Answer

Sluggish

Answer

Endothermic

Question 21

You add more bodies into a "mosh pit" to hope for more collisions.  You have increased-

Accepted Answer

concentration

Answer

temperature

Answer

pressure

Answer

catalyst

Question 22

You make a space much smaller hoping to increase the reaction rates.

Accepted Answer

pressure

Answer

temperature

Answer

concentration

Answer

catalyst

Question 23

You double the electricity available to make the bumper cars go even faster hoping for more collisions.

Accepted Answer

temperature

Answer

pressure

Answer

surface area

Answer

concentration

Question 24

You lower the high jump bar so everyone can get over it.

Accepted Answer

catalyst

Answer

temperature

Answer

pressure

Answer

surface area

Question 25

Which of the following increase the reaction rate?

Accepted Answer

increased concentration

Answer

less surface area

Answer

lower temperature

Answer

an inhibitor

Question 26

Why don't all collisions between particles cause a reaction?

Accepted Answer

not all the particles collide with enough energy

Answer

the particles also need to collide with a catalyst

Answer

not all the particles collide at a high enough temperature

Answer

the particles need to collide with each other twice

Question 27

Why does a higher temperature increase the rate of a reaction?

Accepted Answer

it increases both the frequency and energy of particle collisions

Answer

it only increases the frequency of particle collisions

Answer

it only increases the energy of particle collisions

Answer

it reduces the activation energy of the reaction

Question 28

Which one of these does not add CO2 to the atmosphere?

Accepted Answer

planting trees

Answer

cooking with gas

Answer

burning wood

Answer

riding in a bus

Question 29

When humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.

Accepted Answer

Atmosphere

Answer

Water

Answer

Sun

Answer

Air

Question 30

Combustion is another word for _______________.

Accepted Answer

burning

Answer

a train

Answer

a bus

Answer

a dog

Question 31

What does displacement mean?

Accepted Answer

A chemical reaction where a more reactive metal takes the place of a less reactive metal in a compound.

Answer

A chemical reaction where a less reactive metal takes the place of a more reactive metal in a compound.

Answer

A more reactive metal is removed from a compound.

Question 32

What is the molar mass of C₂H₄O₂?

Accepted Answer

60 g/mol

Answer

40 g/mol

Answer

50 g/mol

Answer

68 g/mol

Question 33

The number 6.02 x 10²³ is called...

Accepted Answer

Avogadro's number and it measures the amount of molecules or atoms in a sample

Answer

Obama's number and it measures the amount of gases or liters in a mole

Answer

Bohr's number and it measures the amount of molecules or atoms in a sample

Answer

Avogadro's number and it measures the amount of gas in moles

Question 34

As you move down the periodic table atoms get bigger.  This is because ____________.

Accepted Answer

The atoms have more energy levels

Answer

The atoms have more mass.

Answer

The atoms have more protons.

Answer

The atoms have more nuetrons

Question 35

Atoms that have a high electronegativity, _______________.

Accepted Answer

hold on to their electrons more tightly.

Answer

give up their electrons more easily.

Answer

have more electron shells.

Question 36

Name the ionic compound SnSe₂

Accepted Answer

Tin (IV) Selenide

Answer

Tin diselenide

Answer

Tin selenide

Answer

Tin (II) triselenide

Question 37

Which of these combinations is an ionic compound made of?

Accepted Answer

Metal and Nonmetal

Answer

Metal and Metal

Answer

Nonmetal and Nonmetal

Answer

Cation and Cation

Question 38

What is the chemical formula for Tetrasulfur pentoxide?

Accepted Answer

S4O5

Answer

SO

Answer

S4O

Answer

S5O4

Question 39

What is the name of C₃Cl₈?

Accepted Answer

Tricarbon octachloride

Answer

Carbon octachloride

Answer

Carbon trichloride

Answer

Octacarbon trichloride

Question 40

What is the name of CO

Accepted Answer

Carbon monoxide

Answer

Carbon oxide

Answer

Carbon dioxide

Answer

Carbon II oxide

Question 41

What is the electron configuration of sodium?

Accepted Answer

2.8.1

Answer

2.8

Answer

2.8.2

Answer

11

Question 42

Which element has an electron configuration of 2.8.8?

Accepted Answer

Argon

Answer

Lead

Answer

Flourine

Answer

Neon

Question 43

How many valence electrons are represented here?

Accepted Answer

5

Answer

7

Answer

2

Answer

8

Question 44

How many electrons can the first energy level hold?

Accepted Answer

2

Answer

1

Answer

8

Answer

0

Question 45

How many valence electrons does Chlorine have?

Accepted Answer

7

Answer

5

Answer

2

Answer

5

Question 46

How many valence electrons does phosphorus have?

Accepted Answer

5

Answer

2

Answer

8

Answer

15

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