Chapter 04 hmwk & key terms ejm

Chapter 04 hmwk & key terms ejm - 1 CHM 1120...

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CHM 1120 Additional Chapter 4 Homework (1-05) Dr. Adams Please eventually add these materials to the chapter 4 section of your journal. Define these key terms. Element A substance that cannot be decomposed into simpler substances by chemical means compound A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements. mixture A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision. protons A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms. Neutrons A neutral subatomic particle having a mass of 1.0087 amu nucleus The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles Electrons A subatomic particle having a mass of 0.00054858 amu and a charge of 1-. 1
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atomic number Integral number of protons in the nucleus; defines the identity of element isotopes mass number
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Chapter 04 hmwk & key terms ejm - 1 CHM 1120...

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