MCQ

CH3 - ATOMS AND ELEMENTS

Which element does not form a stable ion with the same electronic structure as argon?

2017 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which statements about isotopes of the same element are correct?1 They are atoms which have the same chemical properties because they have the same nu...

2016 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which row describes silicon(IV) oxide? [Table_1]

2017 Winter

1

MCQ

CH3 - ATOMS AND ELEMENTS

The table shows information about four different particles.[Table_1]What are the values of W, X, Y and Z?

2016 Winter

2

MCQ

CH3 - ATOMS AND ELEMENTS

Why do isotopes of the same element have the same chemical properties?

2017 Winter

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which statements about isotopes of the same element are correct?1. They are atoms which have the same chemical properties because they have the same n...

2016 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The electronic structures of atoms Q and R are shown.Q and R form an ionic compound.What is the formula of the compound?

2017 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An atom has three electron shells. There are three electrons in the outer shell. How many protons and how many neutrons are in this atom? [Table_1]

2016 Winter

2

MCQ

CH3 - ATOMS AND ELEMENTS

Carbon has three naturally occurring isotopes, $^{12} ext{C}$, $^{13} ext{C}$ and $^{14} ext{C}$.Which statement explains why the isotopes have the sa...

2017 Winter

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which dot-and-cross diagram shows the outer shell electron arrangement in a molecule of carbon dioxide?

2017 Winter

1

MCQ

CH1 - STATES OF MATTER

Small crystals of purple $\text{KMnO}_4$ $(M_r = 158)$ and orange $\text{K}_2\text{Cr}_2\text{O}_7$ $(M_r = 294)$ were placed at the centres of separa...

2017 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

Pure water has a boiling point of 100 °C and a freezing point of 0 °C. What is the boiling point and freezing point of a sample of aqueous sodium c...

2017 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

A chromatogram obtained from the chromatography of four substances is shown. Which substance has an $R_f$ value of 0.6?

2017 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Sodium reacts with chlorine to form sodium chloride.Which statements describe what happens to the sodium atoms in this reaction?1. Sodium atoms form p...

2017 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Diamond is extremely hard and does not conduct electricity.Which statement explains these properties?

2017 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which statement about metals is not correct?

2017 Summer

1

MCQ

CH4 - ATOMS COMBINING

Aluminium reacts with fluorine.$xAl(s) + yF_2(g) \rightarrow zAlF_3(s)$Which values of $x$, $y$ and $z$ balance the equation?[Table_1]

2017 Summer

2

MCQ

CH4 - ATOMS COMBINING

Carbon monoxide burns in oxygen to produce carbon dioxide. $$2\text{CO}(g) + \text{O}_2(g) \rightarrow 2\text{CO}_2(g)$$ Which mass of carbon dioxide...

2017 Summer

1

MCQ

CH1 - STATES OF MATTER

Which statement about electrolysis is correct?

2017 Summer

1

MCQ

CH1 - STATES OF MATTER

The reactivity series for a number of different metals is shown.[Image_1: Reactivity series and diagram]The diagram shows different metal strips dippe...

2017 Summer

2