Which metal would be most suitable for overhead power cables? Give two reasons for your choice.
Why is iron used instead of tungsten to reinforce concrete?
The front section of a space rocket is known as a nose cone. It becomes extremely hot as the rocket travels through the air. Which metal is best suited for making a space rocket nose cone? Explain your answer.
Tungsten is a transition element. State two physical properties of transition elements that Group I elements do not show.
As tungsten becomes extremely hot and reacts with oxygen, tungsten(VI) oxide is produced. Balance the chemical equation for this reaction. ......W + ......O$_2$ $\rightarrow$ 2WO$_3$
Arrange these metals by reactivity, starting with the least reactive metal.
How does changing the acid concentration affect the reaction rate?
Which acid shows the fastest reaction with the alloy?
Estimate how long it would take for the alloy's mass to fall by $1.0\text{ g}$ when phosphoric acid has a concentration of $0.03\text{ mol/dm}^3$.
Suggest which of these pH values matches concentrated aqueous ethanoic acid. Circle the correct choice. pH 4, pH 7, pH 10 or pH 13