Theory

CH13 - THE BEHAVIOR OF METALS

The table gives information about three different metals G, H and J.[Table_1: metal vs reactivity]What is the order of reactivity of these metals?[Tab...

2009 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

Which property do all metals have?A. They are hard.B. They conduct electricity.C. They form acidic oxides.D. They react with water.

2009 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

Which property do all metals have? A) They are hard. B) They conduct electricity. C) They form acidic oxides. D) They react with water.

2009 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

The table gives information about three different metals G, H and J. [Table_1] metal | does it react with | water | steam | G | ✗ ...

2009 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

The reactivity series of metals given below contains both familiar and unfamiliar elements.For most of the unfamiliar elements, which are marked *, th...

2009 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

Compound X is heated with carbon using the apparatus shown. A brown solid is formed in the reaction tube and the limewater turns cloudy.What is compo...

2009 Winter

Theory

CH13 - THE BEHAVIOR OF METALS

Some reactions of three metals are listed in the table.[Table_1]What is the order of reactivity of the metals?[Table_2]

2009 Winter

Theory

CH13 - THE BEHAVIOR OF METALS

Which property do all metals have?A They are soluble in water.B They conduct electricity.C They have high melting points.D They react with dilute sulf...

2009 Winter

Theory

CH13 - THE BEHAVIOR OF METALS

Some reactions of three metals are listed in the table.What is the order of reactivity of the metals?

2009 Winter

Theory

CH13 - THE BEHAVIOR OF METALS

Compound X is heated with carbon using the apparatus shown. A brown solid is formed in the reaction tube and the limewater turns cloudy. What is co...

2009 Winter

Theory

CH1 - STATES OF MATTER

Which diagram shows the process of diffusion?[Image_1: A, B, C, D diagrams with different atoms]

2012 Summer

Theory

CH2 - SEPARATING SUBSTANCES

Which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?A) crystallisationB) distillationC) evaporationD) ...

2012 Summer

Theory

CH10 - THE SPEED OF A REACTION

A student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30°C.The student has a beaker...

2012 Summer

Theory

CH3 - ATOMS AND ELEMENTS

An element Y has the proton number 18.The next element in the Periodic Table is an element Z.Which statement is correct?A. Element Z has one more elec...

2012 Summer

Theory

CH3 - ATOMS AND ELEMENTS

Which atom has twice as many neutrons as protons?A: $^1_1\text{H}$B: $^2_1\text{H}$C: $^3_1\text{H}$D: $^4_2\text{He}$

2012 Summer

Theory

CH4 - ATOMS COMBINING

Which is a simple covalent molecule?[Table_1]

2012 Summer

Theory

CH4 - ATOMS COMBINING

The electronic structures of atoms P and Q are shown.P and Q react to form an ionic compound.What is the formula of this compound?A. PQ2B. P2QC. P2Q6D...

2012 Summer

Theory

CH4 - ATOMS COMBINING

The diagrams show the structures of two forms, P and Q, of a solid element.What are suitable uses of P and Q, based on their structures?[Table_1]| |...

2012 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between magnesium and dilute sulfuric acid is shown.$$\text{Mg } + \text{ H}_2\text{SO}_4 \rightarrow \text{MgSO}_4 + \t...

2012 Summer

Theory

CH1 - STATES OF MATTER

Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold. The teeth were coated with a thin layer of carbon and were t...

2012 Summer