BSC-2010 Chapter Notes - Chapter 2: Hydrogen Atom, Neuron, Salt
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Matter is anything that takes up space and has mass: element: substance that cannot be broken down into other substances by chemical reactions b. i. Usually the first one or two letters of the name: compound: substance consisting of two or more elements in a fixed ratio c. i. Compound with equal numbers of cl and na atoms c. ii. Pure sodium is a metal and chlorine is a gas and their combination forms an edible compound iii. An element"s properties depend on the structure of its atoms. Each element consists of unique atoms a: an atom is the smallest unit of matter that still retains the properties of an element, subatomic particles c. i. Neurons and protons form the atomic nucleus c. iv. Electrons form a cloud around the nucleus c. v. neutron mass and proton mass are almost identical and are measured in daltons: atomic number d. i.
