Quiz about Year 10 Chemistry

Question 1

The central region of an atom where its neutrons and protons are is its

Accepted Answer

nucleus

Answer

electron cloud

Answer

core

Answer

center

Question 2

An atom with atomic number 6 would have how many protons

Accepted Answer

6

Answer

12

Answer

3

Answer

cannot be determined

Question 3

A part of the atom that has a negative charge is?

Accepted Answer

electron

Answer

Proton

Answer

neutron

Question 4

If the number of protons changes, does the atom change its identity?

Accepted Answer

YES!

Answer

NO!

Question 5

What do these isotopes of carbon all have in common?

Accepted Answer

atomic number and electrons

Answer

neutrons & mass number

Answer

atomic number and neutrons

Answer

protons, atomic number, and mass number

Question 6

How many neutrons does the isotope of lithium have?

Accepted Answer

5

Answer

8

Answer

3

Answer

4

Question 7

How many protons does this isotope of titanium have?

Accepted Answer

22

Answer

48

Answer

26

Answer

70

Question 8

In a correctly written symbol what would be located in the "A" position?

Accepted Answer

mass number

Answer

number of neutrons

Answer

atomic number

Answer

number of electrons

Question 9

What quantities vary between isotopes of an element?

Accepted Answer

neutrons and atomic mass

Answer

protons, electrons, and atomic mass

Answer

protons, electrons, and atomic number

Answer

neutrons and electrons

Question 10

which atom has  4 neutrons?

Accepted Answer

Li-7

Answer

Li-6

Answer

Li-8

Answer

they have the same # of neutrons

Question 11

How many neutrons in C-14?

Accepted Answer

8

Answer

6

Answer

7

Answer

14

Question 12

How many neutrons does the isotope below have? ⁸⁹ ₃₆Kr

Accepted Answer

53

Answer

36

Answer

89

Answer

125

Question 13

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element? I. ⁷⁷₃₅X II. ⁷⁷₃₃X III. ⁸¹₃₇X IV. ⁸¹₃₅X

Accepted Answer

I and IV

Answer

I and II

Answer

III and IV

Answer

I and III

Question 14

How many neutrons does an atom of the isotope Neon-22 have?

Accepted Answer

12

Answer

10

Answer

22

Answer

20

Question 15

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.

Accepted Answer

207

Answer

204

Answer

206

Answer

208

Question 16

Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.

Accepted Answer

false

Answer

true

Question 17

In the equation,^14₆C --> ^14₇N + ^0_-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.

Accepted Answer

Beta

Answer

Radioactive

Answer

Alpha

Answer

Gamma

Question 18

Which type of nuclear radiation is being emitted here?

Accepted Answer

beta

Answer

Alpha

Answer

gamma

Answer

none

Question 19

A helium nucleus with two protons and two neutrons is called a(n) ____.

Accepted Answer

alpha particle

Answer

electroscope

Answer

beta particle

Answer

gamma ray

Question 20

Complete the nuclear equation and determine the type of decay that is occurring in this reaction.

Accepted Answer

alpha

Answer

beta

Answer

gamma

Answer

none

Question 21

Solve this equation for alpha decay.

₈₅²⁰⁹At --> ___ + ₂⁴He

Accepted Answer

₈₃²⁰⁵Bi

Answer

₈₆²⁰⁹Rn

Answer

₈₁²⁰⁷Tl

Answer

₈₅²⁰⁸At

Question 22

Balance the following equation:
¹⁴₆C --> ⁰_-1e + ________

Accepted Answer

147N

Answer

145B

Answer

146C

Answer

42He

Question 23

Gamma rays have

Accepted Answer

no mass

Answer

a huge mass

Answer

a small mass

Answer

an average mass

Question 24

Solve this equation for beta decay.

₆¹⁴C --> ___ + _-1⁰e

Accepted Answer

714N

Answer

410Be

Answer

210He

Answer

613C

Question 25

Carbon-14 has a half life of 5730 years, how many years would it take the 4.0 g sample to decay to 0.25 g?

Accepted Answer

22,920 years

Answer

4 years

Answer

5730 years

Answer

28,650 years

Question 26

An isotope of silver has a half-life of 10 minutes. What fraction of the original mass would remain after one hour?

Accepted Answer

1/64

Answer

1/2

Answer

1/4

Answer

1/8

Question 27

What makes an element radioactive?

Accepted Answer

When it's nuclei decay

Answer

When it's nuclei expands

Answer

When it's electrons explode

Answer

When it's nuclei behave

Question 28

What does pH measure?

Accepted Answer

the amount of hydrogen (H⁺) ions

Answer

the amount of hydroxide (OH^-) ions

Answer

amount of water

Answer

all of the above

Question 29

Which of the following is the strongest acid?

Accepted Answer

1

Answer

5

Answer

3

Answer

8

Question 30

Which of the following is a characteristic of a base?

Accepted Answer

bitter

Answer

sour

Answer

corrosive

Answer

releases hydrogen ions in water

Question 31

Which of the following is a characteristic of an acid?

Accepted Answer

sour

Answer

bitter

Answer

slippery

Answer

releases hydroxide ions in water

Question 32

What is the only substance with a neutral pH of 7?

Accepted Answer

Water

Answer

Milk

Answer

Orange Juice

Answer

Blood

Question 33

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

Accepted Answer

higher

Answer

lower

Answer

the same

Answer

none of the above

Question 34

A neutralization reaction will (almost) always produce...

Accepted Answer

water & salt

Answer

water

Answer

salt

Answer

water & carbon

Question 35

Zn(OH)₂ is an example of a...

Accepted Answer

base

Answer

acid

Answer

salt

Question 36

Identify the salt in the following equation:
Zn(OH)₂ + HNO₃ ---> H₂O + Zn(NO₃)₂

Accepted Answer

Zn(NO₃)₂

Answer

Zn(OH)2

Answer

HNO3

Answer

H2O

Question 37

In a ____ reaction, an acid and an alkali produce a salt and a water.

Accepted Answer

neutralization

Answer

concentrated

Answer

decomposition

Answer

dilute

Question 38

Complete the following reaction:

HCl + Mg(OH)₂ -->

Accepted Answer

MgCl₂ + H₂O

Answer

Mg +H2O

Answer

MgCl₂ + H₂

Answer

MgCl₂ + H₂O + CO₂

Question 39

Complete the following reaction:
Hydrochloric acid + magnesium hydroxide -->

Accepted Answer

Magnesium chloride + water

Answer

Magnesium + water

Answer

Magnesium chloride + hydrogen gas

Answer

Magnesium chloride + water + carbon dioxide

Question 40

What are indicators used for

Accepted Answer

Measuring strength of acids or alkalis

Answer

Measuring density of substances

Answer

Drinking

Answer

Decoration

Question 41

NaCl is a ...

Accepted Answer

salt

Answer

acid

Answer

base

Answer

water

Question 42

Complete the following word equation:

Metal + Acid -->

Accepted Answer

Salt + hydrogen

Answer

Salt + water

Answer

Salt + Water + Carbon dioxide

Question 43

Complete the following word equation:

Metalcarbonate + acid -->

Accepted Answer

Salt + Water + Carbon Dioxide

Answer

Salt + Hydrogen

Answer

Salt + Water

Question 44

How do you remove the water to leave solid copper sulfate crystals?

Accepted Answer

Evaporate

Answer

Filter

Answer

Distill

Question 45

What does the word insoluble mean?

Accepted Answer

Doesn't dissolve

Answer

Does dissolve

Answer

Is part of a solid

Question 46

Salts that are made with sulfuric acid are called ______________.

Accepted Answer

sulfates

Answer

chlorides

Answer

nitrates

Answer

carbonates

Question 47

How do you separate an excess insoluble reactant from a solution?

Accepted Answer

Filtration

Answer

Precipitation

Answer

Crystalisation

Answer

Evaporation

Question 48

Which two chemicals could you react to make only potassium chloride and water?

Accepted Answer

Potassium hydroxide and hydrochloric acid

Answer

Potassium and hydrochloric acid

Answer

Potassium oxide and sulfuric acid

Answer

Potassium and sulfuric acid

Question 49

_________________ + nitric acid --> calcium nitrate + water

Accepted Answer

calcium oxide

Answer

calcium sulfate

Answer

calcium carbonate

Answer

calcium

Question 50

What is the test for Hydrogen gas?

Accepted Answer

Squeaky pop

Answer

Lime water turning cloudy

Answer

Add pH paper

Question 51

What is the test for Carbon Dioxide?

Accepted Answer

Lime water turning milky

Answer

Add Litmus paper

Answer

Squeaky pop

Question 52

When a soluble salt is formed from an acid and an insoluble base, how do you know when an excess of a base has been added?

Accepted Answer

When some of the reactant is left unreacted/undissolved

Answer

When bubbles of gas appear

Answer

When the reactant all dissolves

Answer

When a colour change happens

Question 53

Why do you add excess of the insoluble reactant when making a soluble salt?

Accepted Answer

To make sure all the acid is used up

Answer

To separate the solid from the solution

Answer

To make sure a reaction occurs

Answer

To have the reaction happen faster

Question 54

What is the name of the element with an atomic number of 3?

Accepted Answer

Lithium

Answer

Magnesium

Answer

Sodium

Answer

Potassium

Question 55

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 56

Grinding a effervescent tablet into powder increases the rate of reaction due to increased

Accepted Answer

surface area

Answer

concentration

Answer

temperature

Answer

reactants

Question 57

Adding a catalyst ___________ the activation energy.

Accepted Answer

Lowers

Answer

Raises

Answer

Doesn't affect

Answer

Inreases

Question 58

The minimum amount of energy needed for colliding particles to react is called

Accepted Answer

Activation Energy

Answer

Chemical Energy

Answer

Kinetic Energy

Answer

Potential Energy

Question 59

Which graph shows the effect of increasing temperature on the rate of reaction of calcium carbonate with dilute hydrochloric acid?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 60

The graph shows how the total volume of a gas given off from a reaction changes with time. In which time interval is least gas given off?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 61

In an experiment, a 2 g lump of zinc and 2 g of powdered zinc are added separately to equal volumes of dilute sulphuric acid. The solid line on the graph shows the volume of gas given off when the 2 g lump is used. Which dotted line is obtained when the zinc is powdered?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 62

A student investigated the rate of reaction of calcium carbonate with dilute hydrochloric acid. Every minute, the student recorded the total volume of carbon dioxide produced, until some time after the reaction was complete.
Which graph shows the correct results?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 63

Order the letters from highest to lowest rate of reaction.

Accepted Answer

A > B > C > D

Answer

A > BC > D (B and C have the same rate)

Answer

A > B > CD (C and D have the same rate)

Answer

D > C > B > A

Question 64

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

Year 10 Chemistry

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science