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Food Science/Matter
Vocabulary for Food Science/ Matter
Question | Answer |
---|---|
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 |