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Chemistry
GCSE

A student places equal masses of limestone rocks into two beakers. However, the student crushes the ones in one of the beakers to make a fine powder. Then, he adds hydrochloric acid to both of them. Which takes longer? Would one of them produce more CO2?

First of all let's think of which one would take longer. The one that would take longer would be the slower of the two reactions, and therefore would have a lower rate of reactio...

Answered by Yago M. Chemistry tutor
1805 Views

What is the difference between ionic and metallic bonding?

Ionic bonds occur between a metal and non-metal. In this type of bonding, the electrons in the outer shell are transferred from the metal to the non-metal. This is to allow the atoms to achieve a full out...

Answered by Sareena H. Chemistry tutor
2247 Views

What is a dynamic equilibrium?

In a dynamic equilibrium, both the forward reactions and backward reactions are still happening, but at the same rate. This means that the concentrations of the starting reactants and the products remain ...

Answered by Ellie B. Chemistry tutor
2289 Views

What is an exothermic reaction?

An exothermic reaction produces excess heat as the reactants turn to products. This means that the temperature of the glass flask would rise as the reaction occurs. The net change in energy during a react...

Answered by Nicky M. Chemistry tutor
1776 Views

Why does graphite conduct electericity but diamond does not if both substances have a giant covalent structure?

Graphite consists of carbon atoms joined together. Since carbon has 4 unpaired electrons in it's outer shell, it can form a maximum of 4 covalent bonds by sharing each of it's unpaired electrons with anot...

Answered by Prithi N. Chemistry tutor
13108 Views

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