First Semester Pysical Science Exam Vocab

What is a horizontal row of elements on the periodic table?

What are facts and statistics collected for reference or analysis?

What is a bond formed atoms share one or more pairs of electrons?

What is the smallest unit of an element that maintains the chemical properties of that element?

What is a substance that changes the rate of a chemical reaction?

What is the temperature and pressure at which a solid becomes a liquid?

An element is ____ when it is unreactive and the outer shell of electrons is full

What is the variable that is observed and likely changes in response to another variable?

What is the temperature and pressure at which a liquid becomes a gas?

What is the process in which a solid changes directly into a gas?

What is an amount of energy in an electron?

What is a property of a substance relating to the chemical reactivity of that substance?

What is the attractive force between oppositely changed ions?

What is a reaction in which 2 or more elements take the place of another 2 or more elements?

What is the sum of the atomic masses of all of the atoms in a compound?

What is the ability to deform under tensile stress; able to be shaped into a wire?

What is the arrangement of elements, ordered by atomic number, called?

What is the number of electrons that are found in the outermost she'll of electrons called?

What is a series of steps followed to solve/answer a scientific question?

What is the average mass numbers of all of the isotopes in an element by abundance?

What is the state in which energy is added to electrons that enables electrons to jump levels?

What is an atom, radical, or molecule that has gained or lost electrons and has a charge?

What is a reaction in which a single compound breaks down to form 2 or more simple substances?

What is an ion made of two or more atoms?

What is a non-solid state of matter in which the atoms or molecules are free to move around?

What is a state of matter that consists of free-moving ions and electrons?

What is a region in an atom where there is a high probability of finding electrons?

What is the resistance of a gas or liquid to flow?

What is the quality of something that can be shaped into something else without breaking?

What are the laws that state the mathematical relationships between characteristics of a gas?

What is a measure of how easily a substance will set on fire, through flame or combustion?

What is an atom that has the same number of protons, but a different number of neutrons?

What is a set of chemical symbols showing the element's present/ the proportions in a compound?

What is a change that occurs when one or more substances change into entirely new substances?

What is the shininess of soft glow of metals called?

What is the fixed amount of energy that an atom, molecule, or neucleus can have?

What is a substance that cannot be broken down into simpler substances by chemical means?

What is the SI unit of pressure?

What is a decimal measurement system based on the number 10 and the meter?

What is the sum of the number of protons and neutrons in the neucleus of an atom?

What is the amount of force exerted per unit area of a surface?

What is a reaction in which 2 or more simpler substances combined to form a single compound?

What is the rule that states that atoms will seek to have 8 electrons to fill their shell?

What is the variable that is purposely changed in an experiment?

What is an oxidation reaction of an organic compound in which heat is released?

What is a substance made up of two or more different elements joined by chemical bonds?

What is an unchanged standard to compare your results to in an experiment?

What is the ratio of the mass of a substance to the volume of a substance?

What is a chemical reaction that requires energy input?

What is an electron that is found in the outermost shell of an atom?

What is a theory of the thermodynamic behavior of matter, based on kinetic energy?

What is a property that is measurable, whose values describes a state of a physical system?

What is the state in which an electron has the amount of energy that it started with?

What is a reaction in which an element takes the place of another element in a compound

What is an educated guess that can be tested with an experiment?

What is the mass of a substance with the same number of units as there are atoms (6.02...)

What is a chemical reaction in which energy is released to the surroundings as heat?

What is the upward force that keeps an object immersed in or floating on a fluid?

What is the number of protons in the neucleus of an atom?

What is a combination or more substances that are not chemically combined?

What is a change of matter from one form to another without a change in chemical properties?

What is the capacity to do work?

What are the vertical columns of elements in the periodic table?

What is a measurement system that uses pounds, quarts, Fahrenheit, seconds, and feet?

What is the change of state from a gas to a liquid?

What is the change of state from a liquid to a gas?