The elementsThere are an ext than 109 different types of atom - one for each element. Differences between the atoms offer the aspects their various chemical properties.

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In 2001, there were 115 well-known elements. However, those over 109 are highly unstable and also have to be made in only tiny quantities.

Scientists room able to do tiny amounts amounts the these new elements in the laboratory. They exist for only a an extremely short time so, whilst they are of scientific interest, they have tiny practical use in the wider world – at the moment!

The tiniest particle?When enough atoms combine together we begin to acquire matter the we have the right to see. This full stop is made from about 10 million million atoms in the phosphor the your computer system screen.

Atoms and also molecules interactive graphicPicture 1.3 Atoms space tiny. Only when numerous them join together deserve to we see visible lumps of elements or compounds.

Elements and also compundsAtoms can integrate with atoms of the same element (for example, oxygen, hydrogen or a bump of carbon). Or they have the right to make compound by combining v atoms that different facets (for instance water or carbon dioxide).

The variety of different combinations of atoms (making compounds) is vast. Native only around 100 aspects we obtain the millions of various materials us see approximately us every day.

Question 1a) Imagine apples, oranges and pears to be atom of three various elements. How numerous different combine of two atoms deserve to we make?(Type a number in the box).b) i. How many of these combinations room still elements?(Type a number in the box).

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b) ii. What would certainly we call combinations that two different atoms?please chooseelementscompoundsmixturesatomsc) look at at these substances. I m sorry ones room elements and also which space compounds?i. Waterplease chooseelementcompoundii. Oxygenplease chooseelementcompoundiii. Hydrogenplease chooseelementcompoundiv. Carbon dioxideplease chooseelementcompoundv. Ironplease chooseelementcompoundNote: Although we often attract atoms together coloured balls, this not what they really look like. In fact, they space too small to check out directly due to the fact that they are smaller sized than light waves. So it is meaningless come think of lock having any kind of colour.navigation bar