Question | Answer |
Matter | Anything that has mass and takes up space. |
Volume | the measure of the size of a body or region in three-dimensional space |
Meniscus | the curve at a liquid's surface by which one measures the volume of the liquid |
Mass | a measure of the amount of matter in an object |
Weight | the measure of the gravitational force exerted on an object |
Inertia | the tendency of an object to resist being moved |
Physical property | characteristic of a substance that does not involve a chemical change, such as density, color, hardness |
Chemical property | a property of matter that describes a substance's ability to participate in chemical reactions |
Chemical change | occurs when one or more substances change into entirely new substances with different properties |
Physical change | a change of matter from one form to another without changing its chemical properties |
States of Matter | the physical forms of matter, which include solid, liquid, and gas |
Solid | the state of matter that has a definite shape and definite volume |
Liquid | the state of matter that has a definite volume, but no definite shape; takes on the shape of its container |
Gas | the state of matter that has no definite shape and no definite volume |
Change of State | the change of a substance from one physical state to another |
Surface tension | the force that acts on the particles at the surface of a liquid |
Viscosity | the resistance of a liquid (or gas) to flow |
Melting | the change of state where a solid becomes a liquid by adding heat |
Evaporation | the change of state where a liquid becomes a gas |
Condensation | the change of state from a gas to a liquid |
Sublimation | the change of state from a solid directly to a gas |
Element | a substance that cannot be broken down into simpler substances by chemical means |
Metal | an element that is shiny and is a good conductor of heat and electricity |
Nonmetal | an element that is a poor conductor of heat and electricity |
Metalloid | an element that has properties of both metals and nonmetals |
Compound | a substance made up of atoms of two or more different elements chemically combined |
Mixture | a combination of two or more substances that are not chemically |
Solution | a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase |
Solute | in a solution, the substance that dissolves in the solvent |
Solvent | in a solution, the substance in which the solute dissolves |
Periodic | describes something that occurs or repeats at regular intervals |
Period | a horizontal (across) row of elements in the periodic table |
Group | a vertical (up and down) column in the periodic table |
Atom | smallest unit of matter |
Electron | negatively charged particle surrounding the nucleus of an atom |
Proton | positively particle in the nucleus of an atom |
Neutron | neutrally charged particle in the nucleus of an atom |