Structure 1. Models of the particulate nature of matter

1.1 Introduction to the particulate nature of matter

1.2 The nuclear atom

1.3 Electron configurations

1.4 The mole

1.5 Ideal gases

Structure 2. Models of bonding and structure

2.1 The ionic model

2.2 The covalent model

2.3 The metallic model

2.4 From models to materials

Structure 3. Classification of matter

3.1 The periodic table

3.2 Functional groups: Organic compounds

Reactivity 1. What drives chemical reactions?

1.1 Measuring enthalpy changes

1.2 Energy cycles

1.3 Energy from fuels

Reactivity 2. How much, how fast and how far?

2.1 Amount of chemical change

2.2 Rate of chemical change

2.3 Extent of chemical change

Reactivity 3. What are the mechanisms of chemical change?

3.1 Proton transfer reactions

3.2 Electron transfer reactions

3.3 Electron sharing reactions (Radicals)

3.4 Electron-pair sharing reactions

IB Chemistry SL 1.2 The nuclear atom Question Bank

[Maximum number: 1]

What is the total number of protons and electrons in one mole of hydrogen gas?

$1.2 \times 10^{24}$

$2.4 \times 10^{24}$

[Maximum number: 3]

Chlorine undergoes many reactions.

(a)

(i)

The mass spectrum of chlorine is shown.

Outline the reason for the two peaks at m / z=35 and 37 .

[ 1 ]

(ii)

Explain the presence and relative abundance of the peak at m / z=74.

[ 2 ]

[Maximum number: 1]

The diagram below shows the behaviour of protons, neutrons and electrons in an electric field.

What is the correct identity of each particle?

Protons

Electrons

Neutrons

[Maximum number: 1]

There are many oxides of silver with the formula $\mathrm{Ag}_{\mathrm{x}} \mathrm{O}_{\mathrm{y}}$ . All of them decompose into their elements when heated strongly.

(a)

Naturally occurring silver is composed of two stable isotopes, ${ }^{107} \mathrm{Ag}$ and ${ }^{109} \mathrm{Ag}$ .

The relative atomic mass of silver is 107.87 . Show that isotope ${ }^{107} \mathrm{Ag}$ is more abundant.

[ 1 ]

[Maximum number: 4]

When heated in air, magnesium ribbon reacts with oxygen to form magnesium oxide.

(a)

Most nitride ions are ${ }^{14} \mathrm{~N}^{3-}$ .

[ 2 ]

(i)

State the number of subatomic particles in this ion.

Protons:
Neutrons:
Electrons:

[ 1 ]

(ii)

Some nitride ions are ${ }^{15} \mathrm{~N}^{3-}$ . State the term that describes the relationship between ${ }^{14} \mathrm{~N}^{3-}$ and ${ }^{15} \mathrm{~N}^{3-}$ .

[ 1 ]

(b)

Suggest two reasons why atoms are no longer regarded as the indivisible units of matter.

[ 2 ]

[Maximum number: 1]

Which of the following species have the same number of outer electrons? The letters do not represent symbols of elements.
${ }_{12}^{24} \mathrm{~W}^{2+}$ ${ }_{16}^{31} \mathrm{X}^{-}$ ${ }_{21}^{45} \mathrm{Y}^{2+}$ ${ }_{9}^{19} Z^{-}$

X and Y

X and W

Z and Y

Z and W

[Maximum number: 1]

What is the number of subatomic particles in ${ }^{137} \mathrm{Ba}^{2+}$ ?

Protons

Neutrons

Electrons

137

[Maximum number: 1]

Which property is the same for water containing tritium $\left({ }^{3} \mathrm{H}\right)$ and water containing hydrogen $\left({ }^{1} \mathrm{H}\right)$ ?

Density

Dipole moment of a molecule

Boiling point

Relative molecular mass

[Maximum number: 1]

Which is the best description of relative atomic mass, $A_{\mathrm{r}}$ ?

The number of neutrons and protons present in the nucleus of an atom

The average number of neutrons and protons in all isotopes of an element

The weighted mean mass of naturally occurring isotopes of an element compared to the mass of an atom of carbon-12

The weighted mean mass of naturally occurring isotopes of an element compared to $1 / 12^{\text {th }}$ of the mass of an atom of carbon-12

[Maximum number: 1]

Which row shows the number of subatomic particles in ${ }^{57} \mathrm{Fe}^{3+}$ ?

Protons

Neutrons

Electrons

0 selected

Question 1

Question 1

Question 1(a)

Question 1(a)(iv)

Question 1(a)(v)

Question 1

Question 1

Question 1(b)

Question 1

Question 1(e)

Question 1(e)(i)

Question 1(e)(ii)

Question 1(f)

Question 2

Question 2

Question 2

Question 3

Question 4