Chemistry Questions and Answers [211581]2023

Matter - -Anything that has mass and takes up space -Mixture - -A combination of two or more substances that are not chemically combined -Compound - -A substance made up of atoms of two or more different elements joined by chemical bonds -homogeneous mixture - -A mixture in which substances are evenly distributed throughout the mixture -heterogeneous mixture - -A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture -Molecule - -smallest unit of most compounds -Element - -A pure substance made of only one kind of atom -periodic table - -A chart of the elements showing the repeating pattern of their properties -Atom - -Smallest particle of an element -Volume - -The amount of space an object takes up -Mass - -the amount of matter in an object -Metals - -Elements that are good conductors of electric current and heat. -Nonmetals - -Elements that are poor conductors of heat and electric current -Metalloids - -Elements that have properties of both metals and nonmetals. -Neutron - -A subatomic particle that has no charge and that is found in the nucleus of an atom -Proton - -A subatomic particle that has a positive charge and that is found in the nucleus of an atom -Nucleus - -Center of an atom -atomic number - -the number of protons in the nucleus of an atom