The mass spectrum of boron
1.17 Activity 2. Calculating relative atomic mass. Students should: 1.17 be able to calculate the relative atomic mass of an element (Ar) ...
1.16 Activity 1. Three types of carbon atom Students should: 1.16 know what is meant by the terms atomic number, mass number, isotopes and...
If a nucleus was the size of a raisin, the rest of the atom would be the size of a sports stadium
Ionic compounds form when the atoms of a metal combine with the atoms of a non - metal
If a nucleus was the size of a raisin, the rest of the atom would be the size of a sports stadium
Atomic models Atoms are the building blocks of matter. Atoms are the smallest possible particles into which an element can be subdivided, withou...
compounds, elements or mixtures, ecosystems or environments?
Sun and air? Study the seaside image for a few seconds . Try to describe it: You might say that the image shows : A calm sea, clear blue sky, br...
compounds, elements or mixtures ?
Sun and air? Study the seaside image for a few seconds . Try to describe it: You might say that the image shows : A calm sea, clear blue sky, br...
volumetric glassware is used to measure accurately volumes of solutions
Concentration Noun :the action or power of focusing all one's attentiona close gathering of people or things.the relative amount of a particular...
1.34 understand that ionic compounds have high melting and boiling points because of strong electrostatic forces between oppositely charged ions1.35 ...
Crystallisation can be used to separate a solid solute from its solvent. Re-crystallisation is used to purify samples obtained in the laboratory. But what is a crystal?