Theory

CH3 - ATOMS AND ELEMENTS

An element S has the proton number 18. The next element in the Periodic Table is an element T. Which statement is correct?A Element T has one more ele...

2009 Summer

Theory

CH3 - ATOMS AND ELEMENTS

Which numbers are added together to give the nucleon number of an ion?A number of electrons + number of neutronsB number of electrons + number of prot...

2009 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The electronic configuration of an ion is 2.8.8.What could this ion be?[Table_1]

2009 Summer

Theory

CH3 - ATOMS AND ELEMENTS

An element S has the proton number 18. The next element in the Periodic Table is an element T.Which statement is correct?A. Element T has one more ele...

2009 Summer

Theory

CH3 - ATOMS AND ELEMENTS

Which numbers are added together to give the nucleon number of an ion?A number of electrons + number of neutronsB number of electrons + number of prot...

2009 Summer

Theory

CH3 - ATOMS AND ELEMENTS

Atom X has 8 more electrons than atom Y.Student 1 says they are in the same group.Student 2 says they are unreactive.Which students can be correct?[Ta...

2009 Winter

Theory

CH3 - ATOMS AND ELEMENTS

Which number is different for isotopes of the same element?A. number of electronsB. number of full shellsC. number of nucleonsD. number of protons

2009 Winter

Theory

CH3 - ATOMS AND ELEMENTS

Which atom has two more electrons than an atom of a noble gas?A. aluminiumB. bromineC. calciumD. rubidium

2009 Winter

Theory

CH3 - ATOMS AND ELEMENTS

Atom X has 8 more electrons than atom Y.Student 1 says they are in the same group.Student 2 says they are unreactive.Which students can be correct?[Ta...

2009 Winter

Theory

CH3 - ATOMS AND ELEMENTS

Which number is different for isotopes of the same element?A number of electronsB number of full shellsC number of nucleonsD number of protons

2009 Winter

Theory

CH1 - STATES OF MATTER

The diagrams show the arrangement of particles in three different physical states of substance X.Which statement about the physical states of substanc...

2011 Summer

Theory

CH2 - SEPARATING SUBSTANCES

An aqueous solution is coloured. Which method of separation would show that the solution contains ions of different colours? A chromatography B crysta...

2011 Summer

Theory

CH2 - SEPARATING SUBSTANCES

The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and fi...

2011 Summer

Theory

CH4 - ATOMS COMBINING

Which two elements react together to form an ionic compound? [Table_1] A. W and X B. X and Y C. Y and Z D. Z and W

2011 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows part of the Periodic Table.Which element is correctly matched with its electronic structure?[Table_1: electronic structure]A: 2,8,1B...

2011 Summer

Theory

CH4 - ATOMS COMBINING

In the diagrams, circles of different sizes represent atoms of different elements.Which diagram represents hydrogen chloride gas?Options: A, B, C, D

2011 Summer

Theory

CH4 - ATOMS COMBINING

The nucleon number and proton number of the lithium atom are shown by the symbol $^7_3\text{Li}$.What is the correct symbol for the lithium ion in lit...

2011 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative molecular mass ($M_r$) of HNO$_3$? A 5 B 31 C 32 D 63

2011 Summer

Theory

CH14 - MAKING USE OF METALS

Electricity from a power station passes through overhead cables to a substation and then to a school where it is used to electrolyse concentrated hydr...

2011 Summer

Theory

CH1 - STATES OF MATTER

Which statement about the electrolysis of molten lead(II) bromide is correct? A A colourless gas is seen at the cathode. B A grey metal is seen at...

2011 Summer