There are currently 118 known elements on the periodic table, and we've put 20 of them ... The chemical symbol for Potassium ...

They include lithium, sodium and potassium, and are placed in the first vertical column on the left of the periodic table. All the Group 1 elements are very reactive, and all react with water to ...

Players read questions about energy levels and score points by picking the correct element as the answer ... the next electron goes into the fourth level. 4th Period: Potassium and Calcium—Electrons ...

Click on the images below to automatically tweet the element infographics. Download the PDFs to make your own wall displays or education resources. We've also created a range of IYPT-themed, ...

For example, lithium (Li), sodium (Na) and potassium (K ... However, the modern periodic table arranges the elements by increasing atomic number, rather than atomic mass. Mendeleev recognised ...

For example, calcium and phosphorus form a strong foundation for our bones and teeth, while potassium ... elements to function properly. These are almost one-quarter of the periodic table and ...