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Intro to Matter

Vocabulary words for the first unit- Introduction to Matter

QuestionAnswer
Physical Science the study of matter and energy.
Chemistry study of all forms of matter and how they interact.
Physics study of energy and how it affects matter.
Scientific Method a series of steps that scientists use to answer questions and solve problems.
Observation any use of the senses to gather information.
Hypothesis a possible explanation or answer to a question.
Data any pieces of information acquired through experimentation.
Theory a unifying explanation to a broad range of hypotheses and observations that have been supported by testing.
Matter anything that has volume and mass.
Meniscus the curve at a liquid’s surface by which you measure the volume of the liquid.
Gravity a force of attraction between objects that is due to their masses.
Weight a measure of the gravitational force exerted on an object, usually by the Earth.
Newton the SI unit of force.
Inertia the tendency of all objects to resist any change in motion.
Physical Property a property of matter that can be observed or measured without changing the identity of the matter.
Chemical Property a property of matter that describes a substance based on its ability to change into a new substance with different properties
Physical Change a change that affects one or more physical properties of a substance; many physical changes are easy to undo.
Chemical Change a change that occurs when one or more substances are changed into entirely new substances with different properties; cannot be reversed using physical means.
States of Matter the physical forms in which a substance can exist; states include solid, liquid, gas, and plasma.
Solid a state in which matter has a definite shape and volume.
Liquid a state in which matter takes the shape of its container and has a definite volume.
Gas the state in which matter changes in both shape and volume.
Plasma the state of matter that does not have a definite shape or volume and whose particles have broken apart; plasma is composed of electrons and positively charged ions.
Change of State the conversion of a substance from one physical form to another.
Melting the change of state from a solid to a liquid.
Freezing the change of state from a liquid to a solid.
Vaporization the change of state from a liquid to a gas; includes boiling and evaporation.
Boiling vaporization that occurs throughout a liquid.
Condensation the change of state from a gas to a liquid.
Evaporation vaporization that occurs at the surface of a liquid below its boiling point.
Sublimation the change of state from a solid directly into a gas.
Pressure the amount of force exerted on a given area; expressed in pascals (Pa).
Boyle's Law the law that states that for a fixed amount of gas at a constant temperature, the volume of a gas increases as its pressure decreases.
Charles's Law the law that states that for a fixed amount of gas at a constant pressure, the volume of a gas increases as its temperature increases.
Law a summary of many experimental results and observations; a law tells how things work.
Model a representation of an object or system.
Meter (m) the basic unit of length in the SI system.
Volume the amount of space that something occupies or the amount of space that something contains.
Mass the amount of matter that something is made of.
Temperature a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object.
Density the amount of matter in a given space; mass per unit volume.
Area a measure of how much surface on object has.
Created by: red8
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