1) What type of change does not create a new substance but changes the appearance of a substance? a) Physical b) Chemical c) Reactants d) Products e) Stays same f) compound 2) Which part of an atom has a negative charge and is found around the outside of the nucleus? a) Neutron b) Electron c) Proton d) Molecule e) Atom f) Nucleus 3) What is found on the periodic table? a) Products b) Reactants c) The Law of conservation of matter d) Matter e) Elements f) Mass 4) What are the smallest parts of an element? a) volume b) compound c) electron d) Atom e) Molecule f) Neutron 5) What do we call the center of an atom where the protons and neutrons are found? a) electron b) Proton c) compound d) Neutron e) molecule f) Nucleus 6) What do we call two or more elements that have combined to create a new pure substance with new properties? a) molecule b) Proton c) compound d) Matter e) volume f) Nucleus 7) What do we call the number of atoms that make up an object? a) Elements b) Mass c) volume d) Reactants e) Products f) compound 8) What happens to the mass of two substances when they combine and create a gas a) Stays same b) Reactants c) Products d) Elements e) Atom f) compound 9) Which part of an atom has a positive charge and is also the atomic number of an element? a) Electron b) Proton c) Neutron d) Mass e) Nucleus f) Atom 10) What do we call the substances we start with in a chemical reaction? a) Reactants b) Products c) Elements d) Matter e) molecule f) Atom 11) What do we call the substances we end with in a chemical reaction? a) Elements b) Law of conservation of matter c) Physical d) Reactants e) Products f) compound 12) Which part of an atom has no charge, is found in the nucleus, and makes the atom heavier by adding more mass to it? a) Proton b) Neutron c) electron d) Elements e) molecule f) Atom

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