1) Matter a) Energy that moves through space in waves b) Anything that does not occupy space or have mass c) A type of chemical reaction that absorbs heat d) a substance that has mass and occupies space. 2) Element a) A mixture of two or more substances b) A particle that can be split into smaller substances c) A compound made up of several different atoms d) Any substance that cannot be broken down into simpler substances 3) Atomic Number a) The total mass of protons and neutrons in an atom b) The number of neutrons found outside the nucleus c) A value representing the energy level of an atom d) Equal to the number of protons found in the nucleus of an atom 4) Atomic Mass a) The number of electrons orbiting the nucleus b) The amount of space an atom occupies c) The number of protons only d) The number of protons and neutrons in the nucleus of an atom 5) Isotope a) Different elements that share the same number of protons b) A mixture of two atoms bonded together c) An atom that has gained or lost electrons d) Atoms of the same element with the same atomic number but different numbers of neutrons 6) Atom a) A large group of molecules bonded together b) A particle with no mass or volume c) A combination of multiple compounds d) The smallest unit of an element that still retains the properties of that element 7) Proton a) A subatomic particle with a negative charge b) A neutral particle in the nucleus c) A particle that orbits around the nucleus d) A subatomic particle that has a positive charge 8) Neutron a) A particle that has a positive charge b) A particle found only in molecules c) An atom missing electrons d) A subatomic particle with no charge 9) Electron a) A positively charged atomic particle b) A heavy particle in the nucleus c) A particle with no electric charge d) A negatively charged particle 10) Ionic Bond a) A bond created by sharing electrons equally b) A weak bond between hydrogen atoms c) A bond that forms by combining neutral atoms d) A bond that forms from the transfer of electrons 11) Covalent Bond a) A bond that forms through electron transfer b) A bond that forms between ions of opposite charges c) A bond involving metallic attraction d) A chemical bond that involves sharing a pair of electrons between atoms in a molecule 12) Compound a) A pure element that can’t be broken down b) A simple atom with one kind of particle c) A mixture that does not form new substances d) A substance of two or more different atoms bonded together, which can be broken down into elements 13) Gas a) A solid form of matter with a fixed shape b) A liquid that expands when cooled c) Particles that are tightly packed and barely move d) Attractions between atoms are weak, and the particles move around in a random and quick manner 14) Liquid a) Has a definite shape and fixed volume b) Particles move very slowly and stay close together c) Takes the shape of its container but not a definite volume d) A state of matter with no definite shape; particles have more space and can move around each other 15) Solid a) Particles move quickly and spread apart b) Has no shape or volume c) A state where atoms are far apart d) A form of matter that has a definite shape and volume; particles have very little movement 16) Solution a) A solid substance made of one element b) A heterogeneous mixture with visible parts c) A liquid that contains undissolved particles d) A homogeneous mixture of two or more substances uniformly dispersed throughout (e.g., sugar water) 17) Solvent a) The substance being dissolved b) A solid that cannot mix with liquids c) The gas released during reactions d) A liquid substance that can dissolve other substances 18) Solute a) The liquid that dissolves another material b) The remaining material after evaporation c) A substance that cannot mix with water d) The dissolved substance in a solution (e.g., sugar) 19) Reactant a) A chemical formed at the end of a reaction b) A product used up during synthesis c) A leftover result of decomposition d) A substance that is present at the start of a chemical reaction and enters the reaction 20) Product a) The starting material of a reaction b) The unchanged substance in a mixture c) The reactant that dissolves completely d) A chemical substance formed as a result of a chemical reaction 21) Acid a) Has a pH higher than 7 b) Is always neutral in water c) Has no effect on metals d) Has a pH lower than 7 22) Base a) Has a pH lower than 7 b) Creates hydrogen ions in solution c) Turns litmus paper red d) Has a pH higher than 7 23) pH Scale a) Measures atomic structure b) Determines the density of a substance c) Describes the brightness of a solution d) A range of numbers used to describe how acidic or basic a solution is; ranges from 0 (most acidic) to 14 (most basic) 24) Stability a) The ability to lose protons easily b) The reaction speed of an atom c) How likely an atom is to break apart spontaneously d) Atoms lose or gain electrons in order to gain stability 25) Hydrogen, Carbon, Oxygen, Nitrogen a) Four gases that rarely appear in living matter b) Elements found only in nonliving materials c) Rare trace elements that make up little of the human body d) The four elements that make up most of the mass of living things

Basic Chemistry

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