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Science Vocabulary Bing Density/Ch. 2/Ch. 3 Matter A property of liquids. A Liquids resistance to flowing is ________. Syrup, Honey and Ketchup all have a very high _________. =Viscosity This graph shows what kind of relation ship Directly Proportional Density, hardness, texture, state of matter, boiling point and color are examples of… =Physical Properties (of matter) _______ particles move freely, collide and take up all available space. They move extremely fast (even faster when the temp increases) =Gas A shrinking puddle is an example The added energy from the sun for example allows some of the water molecules on the surface of the puddle to escape into the air. =evaporation A __________ has a definite shape and definite volume. Particles Vibrate They are locked in a tight pattern =Solid Change in state from Liquid to Solid = Freezing ____________ is the measure of the average energy of random motion of particles of matter. =Temperature Anything that has mass and takes up space… =matter What kind of relationship does the graph represent? An _________ is a pure substance that cannot be broken down into any other substances by chemical or physical means. Examples Oxygen, Nitrogen, Hydrogen, Gold =Element A compound can be represented by a ____________ ___________ , which shows the elements in the compound and how many atoms are present. =chemical formula Change from a liquid to a Gas =Vaporization “A substance that flows”. Examples= Liquid and Air =Fluid Change of state when a substance goes straight from a Solid to a Gas Example= Dry Ice =Sublimation Change of state from a Gas to a liquid is __________. (They lose thermal energy) =Condensation When pressure goes down, volume goes down. When Temp increases, Volume increases. This is Charles’s Law A __________ __________ is a characteristic of a pure substance that describes its ability to change into different substances. =Chemical properties Atoms that are held together by chemical bonds form larger particles called … =molecules If a piece of metal has a mass of 50 grams and a volume of 2 cubic centimeters, what is its density? =25 grams/cubic centimeter An _______ is the basic particle from which all elements are made. =atom When a solid substance begins to turn into a liquid? =Melting Point What kind of energy is stored in the foods you eat, and in the cells of your body? =Chemical Energy A __________ is made of two or more substances - elements, compounds, or boththat are together in the same place but are not chemically combined. =mixture When Pressure goes up, volume goes down. What law is this? The amount of space an object takes up is its… Length X Width X Height = =Volume This form of energy travels through space in the form of waves. =one form Is visible light =electromagnetic energy What is the force that holds two atoms together in a chemical formula (compound)? =chemical bond The __________ of a gas is the force of its outward push divided by the area of the walls of the container. = Pressure A _______ _______ is any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance. Example water changing from a liquid to gas =Physical Change How do you calculate the volume of an irregularly shaped object? =Water Displacement The amount of particles packed into a given amount of space The formula is Mass Volume =Density The substances in a _________ __________ you can not see the different parts. =homogeneous mixture The fact that matter is never created or destroyed in any chemical or physical change is called the… =law of conservation of matter Solid particles that are not arranged in a strong pattern. Example: Rubber Sometimes Flexible =Amorphous Solid A _________ is a pure substance made of two or more elements chemically combined in a set ratio. =compound The metric system (also known as the international system of units or “SI”) is based on the number…. =10 _______ _______ is the total energy of all of the particles in an object. =Thermal Energy A ________ has a definite volume but NO shape of its own. Particles flow, and move past one another. They do not have a definite pattern. =liquid _______ is the ability to do work or cause a change. = Energy A _________ _______ is a change in matter that produces one or more new substances… Example…mixing sulfuric acid and sugar and a new substance charcoal is formed. =Chemical Change