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Food Science/Matter

Vocabulary for Food Science/ Matter

atom the smallest unit of an element that has the properties of that element
chemical property describes how the substance reacts with other substances what?
compound a substance that is made up of two or more elements
density a measure of the amount of mass per unit volume of a substance
electron a part of the atom that has a negative charge and moves around the nucleus
element a substance that cannot be broken down chemically into anything simpler; it is made up of only one type of atom
gas the state of matter that has no definite volume and no definite shape
liquid the state of matter that has a definite volume but not a definite shape
mass a measure of the amount of matter in an object
matter anything that has mass and takes up space
metal an element that is a solid, is usually shiny, and is a good conductor of heat and electricity
molecule the smallest unit of a substance that can exist alone and still have the properties of that substance
neutron a part of an atom with no charge that is located in the nucleus
nucleus the center part of an atom, made up of protons and neutrons
periodic table a chart in which elements are arranged according to their chemical properties
physical property a characteristic of a substance that can be observed or measured
proton a part of an atom with a positive charge and is located in the nucleus of the atom
solid the state of matter that has a definite volume and a definite shape
state of matter the physical form of a substance
volume a measure of the amount of space an object takes up
conservation of mass law states that the total amount of mass in a closed system can neither be created or destroyed; it can only change form
acid substance that reacts with metals and contain hydrogen
base substance that contain hydroxide and can neutralize an acid
chemical reaction the activity that occurs during a chemical change
chemical change happens when two or more substances react and new substances are formed
physical change takes place when a substance keeps the same chemical properties but changes form
Created by: loribarfield