Chemestry C1

Question	Answer
Atoms	Atoms are madeup of 2 different parts, electrons and the nucleus.The nucleus contains protons and neutrons. Protons are positive, electrons are negative and neutrons have a neutral charge. No. of protons = No. of electrons.
Atom infomation from the periodic table	The number of prorons is the atomix number. The mass number is the number of protons + the number of neutrons
Arrangement of electrons in atoms	Shell 1 holds 2 electrons. Shell 2 holds 8 electrons. Shell 4 holds 8. When drawing atoms the electrons are grouped in twos once 4 electrons have been placed on the shell.
Limestone Uses	Made of calcium carbomate. Formed from remains of animals over millions of years Powered limestone can be mxed with clay to create cement. When cement is mixed with water, sand and crushed rock a chemical reaction happens producing concrete

Resource summary

	Created by Cameron- about 9 years ago