Bio 1201 Exam 1 Gregg Questions and Answers Graded A+

Bio 1201 Exam 1 Gregg Questions and Answers Graded A+ Matter consists of chemical elements in pure form and in combinations called ______________. Compounds ______________ consists of chemical elements in pure form and in combinations called compounds. Matter Matter consists of ________________ in pure form and in combinations called compounds. Chemical elements Organisms are composed of _____________. Matter _______________ is anything that takes up space and has mass. Matter Matter is anything that takes up __________ and has _______. Space; mass Matter is made up of ____________. Elements An _________________ is a substance that cannot be broken down other substances by chemical reactions Element A ___________________ is a substance consisting of two or more elements in a fixed ratio. Compound T/F: A compound has characteristics different from those of its elements True An element's properties depend on the structure of its ______. Atom An ____________ is the smallest unit of matter that still retains the properties of an element. Atom Atoms can be broken down into smaller particles like ___________ (no charge), ______________ have a positive charge, and _____________ (negative). Neutrons, protons, and electrons No electrical charge Neutron Postive charge Proton Negative charge Electron _____________ and ___________ form from the atomic nucleus. Neutrons and protons What do neutrons and protons form from? Atomic nucleus ________________ form a "cloud" of negative charge around the nucleus. Electrons Electrons form a "_______" of negative charge around the nucleus. Cloud Neutron mass and proton mass are almost identical and are measured in __________. Daltons ____________ mass and _________ mass are almost identical and are measured in daltons. Neutron and proton Atoms of the various elements differ in number of ________________. Subatomic particles An element's atomic number is the number of ___________ in its nucleus. Protons An element's _________________ is the number of protons in its nucleus. Atomic number An element's ___________ is the sum of protons plus neutrons in the nucleus. Mass number An element's mass number is the sum of