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### 32 Cards in this Set

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 ________________________ is anything that has mass and takes up space. MATTER _____________________________________ are characteristics of a substance (like color, size, solubility, or density) that can be observed or measured without changing the substance into something else. PHYSICAL PROPERTIES _____________________ is the amount of matter in an object. MASS _____________________ is a measure of the pull of gravity on an object. WEIGHT Weight is measured on a _________________________ scale. SPRING Mass is measured on a __________________________. BALANCE _________________________ is the amount of space that an object takes up. VOLUME You can measure the volume of a solid object by placing the object in a graduated cylinder with water and measuring how much water is ______________________________. DISPLACED ____________________ is the concentration of matter in an object. DENSITY You can divide the mass of an object by its volume to find the object’s __________________________. DENSITY A pure substance always has the _____________________ density when measured under the same conditions. SAME True or False: The density of an object is a physical property. TRUE True or False: Changing the shape and amount of an object will also change its density. FALSE A ________________________ is a combination of two or more different kinds of matter, each of which keeps its own physical properties. MIXTURE Sometimes the ability to be dissolved, or ___________________, can be used to identify a substance. SOLUBILITY True or False: A solution is a type of mixture. TRUE A person's weight is _______________ on a high mountain than it is at sea level. DIFFERENT A _______________________ has a definite shape and a definite volume. The particles are tightly packed together. SOLID A ________________________ has a definite volume but no definite shape The particles are not packed together and slide over one another. LIQUID A ______________________ does not have a definite shape or volume. The particles are far apart. GAS _________________________ changes a substance from a liquid to a gas. EVAPORATION ____________________ changes a substance from a gas to a liquid. CONDENSATION _________________ changes a liquid to a solid. FREEZING Changes in which no new substances are formed are _______________________ changes. PHYSICAL Changes in which one or more new substances are formed are called _____________________ changes or reactions. CHEMICAL Production of heat, light, or gas, or a change in color are signals of a ______________ change or reaction. CHEMICAL The ability of a substance to react chemically or go through a chemical change is called _________________________. REACTIVITY The ability of a substance to burn is called ____________________. COMBUSTIBILITY True or false: Rusting iron is a physical change. FALSE ________________ tests can be used to identify substances based on the color of the flame they produce. FLAME The strength of acids and bases can be measured using dyes called ________________________. INDICATORS An ______________________ is a combination of a metal and other substances, such as oxygen, sulfur, carbon, or silicon. ORE