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Chemistry
GCSE

Explain why the reactivity of the elements in group 1 increases as we go down the periodic table?

The reactivity of group 1 metals increases as we go down the periodic table because as we go down the group the electrons are further away from the nulceus as the number of shells increase and therefore t...

Answered by SUNIYA K. Chemistry tutor
16630 Views

Why should we use biodiesel rather than regular petroleum diesel?

The combustion of biodiesel produces less carbon dioxide, sulfur dioxide and particulates than that of regular diesel. This causes less global warming from the greenhuse effect and less sulfur dioxide pol...

Answered by Bradley M. Chemistry tutor
2020 Views

What is the difference between an ionic bond and a covalent bond?

An ionic bond is generally between a metal and a non metal atom. It is based on electrostatic attractions of two ions formed from an atoms loss or gain of electrons. A metal e.g. Li will donate one or mor...

Answered by Francesca S. Chemistry tutor
5178 Views

In terms of electrons, what happens when a calcium atom reacts with chlorine atoms to form calcium chloride?

Calcium chloride in an ionic compound. The calcium atom loses two electrons, and each chlorine atom gains one electron, to form a full outer shell of electrons. The electrostatic force of attraction betwe...

Answered by Yusuf S. Chemistry tutor
24660 Views

Give an example of an alkane and give one main difference between alkane and alkene?

Example of an alkane is C​​​​​​H​4​​​​ methane

The main difference between alkane and alkene is the saturation of the carbon-carbon bond. In alkane is unsaturated and has a C-...

Answered by Suniya K. Chemistry tutor
3859 Views

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