Chemistry

Question	Answer
Elements and Compounds	Elements contain only one atom. Compounds contain 2 or more different atoms bonded together. Image: Element (binary/octet-stream)
Mixture	Image: Maxresdefault (binary/octet-stream)
Atom	Atoms only have 2 electrons in the first shell. the order of electrons is 2,8,8. The size of an electron is 1x10-7 Image: Images (binary/octet-stream)
Balancing equations: Compounds with a metal and one non-metal	The metal comes first and the non-metal ends with 'ide'. Ex. CuO - Copper Oxide
Balancing equations: Compounds with a metal and two non-metals with one non-metal being oxygen.	The metal comes first and the first non-metal becomes 'ate'. Ex. CuSO4 - Copper Sulphate
Balance this: Ca + O2 = CaO	2Ca + O2 = 2CaO
Atomic structure	1.The number of protons define the element 2.If we change the number of neutrons, we make an isotope 3.If we change the number of electrons, we make an ion

Resource summary

	Created by Ana Rodrigues over 6 years ago