The least easily oxidized of the metals below is?
Ca
Na
Zn
Al
Correct answer is C
The activity series is a type of ordering system for elements, which ranks how reactive a certain element is in relation to other elements. The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper >
zinc
lead
iron
copper
Correct answer is C
No explanation has been provided for this answer.
A common characteristics of copper and silver in their usage as coinage metals is that they
have high metallic lustre
are not easily oxidized
are easily oxidized
are not easil reduced
Correct answer is B
No explanation has been provided for this answer.
blue flame
brick-red flame
violet flame
golden-yellow flame
Correct answer is C
No explanation has been provided for this answer.
CH4 and H2O
CH4 and H2
CO2 and H2
CO and H2
Correct answer is D
No explanation has been provided for this answer.