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The different states at room temperature occur as a result of differences in the bonding and structure of chlorine and sodium chloride. In chlorine, there are covalent bonds between individual atoms which...

An atom has no overall charge because each element has the same number of protons and electrons. Protons have a +1 charge, and electrons have a -1 charge, these charges cancel out if there is the same amo...

Firstly, the intercostal muscles contract. This causes the ribcage to move upwards and outwards. The diaphragm also contracts. This all has the combined effect of increasing the volume of the lungs. As a ...

Sin duda, hay muchos peligros de fumar para la salud. Uno de los peores peligros es el riesgo del cáncer de los pulmones. Fumar cigarillos produce un riesgo mayor de enfermedad de los pulmones y aumeta la...

When the balloon is rubbed on your head, it becomes electrostatically charged (this is because electrons are transfered to/from the balloon from/to your hair). When you bring the balloon, which now has an...