No questions found
Which row describes the arrangement and movement of particles in a liquid?
[Table_1]
560
526
509
A mixture is separated using the apparatus shown.
What is the mixture?
588
521
537
Which statement about paper chromatography is correct?
573
520
581
Element X has 7 protons.
Element Y has 8 more protons than X.
Which statement about element Y is correct?
514
587
570
A covalent molecule Q contains only six shared electrons. What is Q?
596
587
525
Which row describes how an ionic bond forms between a sodium atom and a chlorine atom?
[Table_1]
505
540
540
Which diagram shows the structure of an alloy?
594
596
550
Methane burns in oxygen to produce carbon dioxide and water.
What is the balanced equation for this reaction?
557
544
546
What is the relative formula mass of magnesium nitrate, Mg(NO$_3$)$_2$?
539
505
576
In separate experiments, electricity was passed through concentrated aqueous sodium chloride and molten lead(II) bromide.
What would happen in both experiments?
587
548
507
Steel core aluminium cables are used for overhead electricity cables.
Which statement explains why these cables are used?
578
555
568
The complete combustion of propane is exothermic.
The equation for this reaction is shown.
$C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O$
Which energy level diagram represents the complete combustion of propane?
525
573
591
Which changes occur when hydrogen is burned in oxygen?
[Table_1]
539
508
543
When sulfur is heated it undergoes a ......1...... change as it melts.
Further heating causes the sulfur to undergo a ......2...... change and form sulfur dioxide.
Which words complete gaps 1 and 2?
570
597
527
Zinc reacts with an acid to form a gas. The volume of gas produced is measured at intervals. The results are shown as curve Z.
The reaction is repeated in the presence of a catalyst.
Which curve shows the results for the catalysed reaction?
542
507
600
Three separate experiments are carried out on an aqueous solution of S.
The results are shown.
1. Magnesium does not react with the solution.
2. A gas is given off when ammonium sulfate is heated with the solution.
3. Methyl orange turns yellow when added to the solution.
What is S?
576
546
561
Element X forms an oxide, XO, that neutralises sulfuric acid.
Which row describes X and XO?
[Table_1]
548
585
585
Copper(II) sulfate is prepared by adding excess copper(II) oxide to warm dilute sulfuric acid.
Which purification methods are used to obtain pure solid copper(II) sulfate from the reaction mixture?
1 crystallisation
2 filtration
3 chromatography
4 distillation
539
503
557
Some reactions of element M are shown.
What is element M?
529
578
515
Element X is in Group II of the Periodic Table.
Which statements about X are correct?
1. X is a metal.
2. X has two electrons in its outer shell.
3. X is a liquid at room temperature.
530
516
595
Which row describes the trend in properties of the elements in Group I as the group is descended? [Table_1]
580
562
541
An element melts at 1455°C, has a density of 8.90 g/cm³ and forms a green chloride.
Where in the Periodic Table is this element found?
513
505
571
Some properties of metal J are listed.
• J does not react with cold water.
• J reacts with dilute hydrochloric acid.
• No reaction occurs when the oxide of J is heated with carbon.
What is J?
592
541
560
Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel.
Which substances in the iron are removed?
[Table_1]
544
540
590
Which row describes a use of the metal and explains why it is used?
[Table_1]
573
528
600
Ammonium chloride is heated with aqueous sodium hydroxide.
A gas is produced which turns damp universal indicator paper blue.
Which gas has been produced?
579
546
534
Which two gases make up approximately 99% of clean, dry air?
526
551
580
A student writes three statements about potassium nitrate, $\text{KNO}_3$.
1. The relative formula mass of $\text{KNO}_3$ is 101.
2. Potassium nitrate contains the three essential elements for plant growth.
3. Potassium nitrate could be used as a fertiliser.
Which statements are correct?
501
525
577
Which row describes the uses of sulfur and sulfur dioxide?
[Table_1]
591
543
514
A white solid Z reacts with dilute hydrochloric acid to produce a gas.
The same gas is produced when compound Z is heated strongly.
What is Z?
552
537
595
Some information about compound L is listed.
1. L is an organic compound which contains four hydrogen atoms.
2. L is soluble in water.
3. An aqueous solution of L reacts with copper(II) carbonate to produce a gas.
What is L?
547
573
557
The structure of an organic molecule is shown.
Which functional groups does this molecule contain?
[Table_1]
572
513
506
Which compounds belong to the same homologous series?
569
595
571
Which statement about alkanes is correct?
562
571
558
P, Q, R and S are four organic compounds.
P is an unsaturated hydrocarbon.
Q burns but otherwise is unreactive.
R contains a C–C single bond and a C=C double bond.
S undergoes addition polymerisation.
Which compounds are alkenes?
592
596
557
Which statement about petroleum fractions is correct?
583
524
595
