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26 Chem Review

A stack of seven grade chemistry terms. By 2 7th Graders

Matter with a definite volume but no definite shape. Liquid!
Combination of two or more different atoms that are chemicaly bonded. Compound!
Change that does not invovle the formation of something new. Physical Change!
Matter with no definite volume or shape. Gas!
Neutrally charged particle in the nucleus. Neutron!
Positively charged particle in the nucleus. Proton!
Negatively charged particle orbiting the nucleus. Electron!
Anything that has mass and occupies space. Matter!
Center of an atom made protons and neutrons. Nucleus!
Matter that has a definite volume and shape. Solid!
Amount of matter in an object. Volume!
Amount of space an object occupies. Mass!
Change that forms bonds creating new substances with different properties. Chemical Change!
Regions around an atom where electrons are orbiting. Electron Levels!
Combination of 2 or more substances that can be seperated. Mixture!
Substances that are the building blocks of matter. Element!
Solid shape of some minerals made by the atomic pattern.` Crystal!
An electrically charged atom due to gain or loss of electrons. ION!
Smallest part of a compound. Molecule!
Symbols and numbers that describe the number of atoms in one molecule of a compound. Chemical Formula!
Number of protons in the nucleus of one atom of an element. Atomic Number!
One or two letter code that stands for an element. Atomic Symbol!
Average mass of one atom of an element. Atomic Mass!
Smallest particle of an element. Atom!
Atoms of the same element with different numbers of neutrons. Isotopes!
Created by: Edree