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

CH15 - AIR AND WATER

This question is about the first 30 elements in the Periodic Table. Name the element which: (a) is 78% of clean, dry air ................................

2022 Spring

Theory

CH4 - ATOMS COMBINING

(a) Add the missing state symbols to the chemical equation for the reaction.MgCO$_3$ ..... + 2HCl ..... $\rightarrow$ MgCl$_2$(aq) + H$_2$O ..... + CO...

2022 Spring

Theory

CH15 - AIR AND WATER

Nitrogen dioxide, NO$_2$, is an atmospheric pollutant and is formed in car engines.(a) Explain how nitrogen dioxide is formed in car engines.............

2022 Spring

Theory

CH13 - THE BEHAVIOR OF METALS

This question is about chemical reactions and electricity.(a) The diagram shows the apparatus used in the production of electrical energy in a simple ...

2022 Spring

Theory

CH17 - ORGANIC CHEMISTRY

This question is about alkanes and alkenes.(a) Short-chain alkanes and alkenes can be formed from long-chain alkanes in a chemical reaction.(i) Name t...

2022 Spring

Theory

Plastics

The names of four esters are listed. methyl propanoate ethyl propanoate propyl propanoate butyl propanoate (a) Esters are a family of organic...

2022 Spring

MCQ

CH1 - STATES OF MATTER

Which two gases will diffuse at the same rate, at the same temperature?

2022 Summer

MCQ

CH1 - STATES OF MATTER

A student measures the time taken for 2.0 g of magnesium to dissolve in 50 cm\(^3\) of dilute sulfuric acid. Which apparatus is essential to complete ...

2022 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

The numbers of protons and neutrons and the electronic structures of four particles, W, X, Y and Z, are shown.[Table_1]Which particles have the same c...

2022 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Which substance should be pure for the intended use?

2022 Summer