Elements

An example of an unstable nuclide is: 

What is a radioactive element.

Carbon dating is used to determine the age of fossils. It is estimated by:

What are the types of elements?

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Use an Internet search to find a picture of the periodic table depicted as a spiral. Is this a good depiction of the information? 

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Are there other ways in which the information could be presented? 

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. In which ways are the periodic table a better way of organising the information than a list? Are there any benefits to a list? 

The same elements that are present on the surface of Earth are also present on Mars. For various reasons, they have not combined the same ways to create the life that we see on Earth. Which factors might be important to life to exist? 

We use different elements and materials in the industry and the source of these elements is from the Earth. Some elements are abundant and easily available. Other elements, such as gold, are rare. Large mines such as this have to be constructed to find gold. Which other important materials do we dig from the Earth? 

 _____(Mendeleev/Moseley) law states that the properties of elements are periodic function of their atomic masses.

What are the combining elements of hydrogen chloride and ammonia?

What is an element?

How many periods and groups are there in the long form of the periodic table?

Which are the two elements whose properties were predicted on the basis of their position in Mendeleev’s periodic table?