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______ is anything that has ____ and takes up space. The study of matter and how matter changes is called _______. Matter can be described in terms of two kinds of properties—physical properties and chemical properties. Changes in matter can be described in terms of physical changes and chemical changes.
Matter, Mass, Chemistry
Matter is anything that has mass and takes up _______. The study of matter and how matter changes is called chemistry. ______ can be described in terms of two kinds of properties—physical properties and chemical properties. Changes in matter can be described in terms of physical changes and chemical changes.
Space, Matter
Matter is anything that has mass and takes up space. The study of matter and how matter changes is called chemistry. Matter can be described in terms of two kinds of_______—physical properties and chemical properties. Changes in matter can be described in terms of _______ changes and _________ changes.
Properties, Physical , Chemical
A physical property is a characteristic of a substance that can be observed without changing the substance into another substance. The temperature at which a solid melts is a _______property. _________, _________, and _______ are other physical properties.
Physical, Color, Hardness,Texture
A _________ property is a characteristic of a substance that can be observed without changing the substance into another substance. The ___________ at which a solid melts is a physical property. Color, hardness, and texture are other physical properties.
Physical, Temperature
A physical property is a characteristic of a substance that can be observed without changing the substance into another substance. The temperature at which a _______melts is a physical property. Color, hardness, and texture are other________ properties.
Solid, Physical
A __________ property is a characteristic of a substance that describes its ________ to change into other substances. To observe the chemical properties of a substance, you must change it into another substance. For example, to observe the chemical reactivity of magnesium, you can let magnesium combine with oxygen to form a new _________ called magnesium oxide.
Chemical, Ability, Substance
A chemical property is a characteristic of a substance that describes its ability to change into other substances. To _______-- the chemical properties of a substance, you must change it into _________ substance. For example, to observe the chemical reactivity of magnesium, you can let magnesium combine with oxygen to form a new substance called _________ oxide.
Observe, Another, Magnesium
A chemical _________ is a ___________ of a substance that describes its ability to change into other substances. To observe the chemical properties of a substance, you must _________ it into another substance. For example, to observe the chemical reactivity of magnesium, you can let magnesium combine with oxygen to form a new substance called magnesium oxide.
Property, Characteristic, Change
A __________ change is any change that _______ the form or _________ of a substance but that does not make the substance into another substance. Examples of physical changes are bending and cutting.
Physical, Alters, Appearance
A physical change is any change that alters the form or appearance of a substance but that does not make the substance into another substance. Examples of physical changes are ________ and ___________.
Bending, Cutting
A physical change is any _______ that alters the ______ or appearance of a substance but that does not make the substance into another __________. Examples of physical changes are bending and cutting.
Change, Form, Substance
A _________ in matter that ________ one or more new substances is a chemical change, or chemical reaction. The burning of gasoline in a car's engine is a chemical change. Chemical changes occur when bonds form between atoms, or when bonds break and new bonds form. As a result, new substances are ______ .
Change, Matter, Produced
A change in matter that produces ______ or _______ new substances is a _________ change, or chemical reaction. The burning of gasoline in a car's engine is a chemical change. Chemical changes occur when bonds form between atoms, or when bonds break and new bonds form. As a result, new substances are produced.
One, More, Chemical
A change in matter that __________ one or more new substances is a chemical change, or chemical reaction. The burning of gasoline in a car's engine is a chemical change. Chemical changes occur when bonds form between atoms, or when bonds _______ and new bonds form. As a result, new substances are produced.
Produces, Produced
One way to ______ chemical ___________ is to observe changes in the properties of the materials involved. Chemical reactions involve two main kinds of changes you can observe—formation of new substances and changes in energy. Changes in properties result when new substances form. A change in color may signal that a new substance has formed. Another indicator might be the formation of a solid when two solutions are mixed. A solid that forms from solution during a chemical reaction is called a precipitate. A third indicator is the formation of a gas when solids or liquids react. These and other kinds of observable changes in properties may indicate that a chemical reaction has occurred.
Predict, Reactions
__________ way to detect chemical reactions is to _________ changes in the properties of the materials involved. Chemical reactions involve two main kinds of changes you can observe—formation of new substances and changes in energy. Changes in properties result when new substances form. A change in color may signal that a new substance has formed. Another indicator might be the formation of a solid when two solutions are mixed. A solid that forms from solution during a chemical reaction is called a precipitate. A third indicator is the formation of a gas when solids or liquids react. These and other kinds of observable changes in properties may indicate that a chemical reaction has occurred.
One, Observe
One way to detect chemical reactions is to observe changes in the properties of the materials involved. Chemical ________ involve two main kinds of changes you can observe—formation of new substances and changes in energy. Changes in properties result when new substances form. A change in color may signal that a new substance has formed. Another indicator might be the formation of a solid when two solutions are mixed. A solid that forms from solution during a chemical reaction is called a _________. A third indicator is the formation of a gas when solids or liquids react. These and other kinds of __________ changes in properties may indicate that a chemical reaction has occurred.
Reactions, Precipitate, Observable
As matter changes in a chemical reaction, it can either absorb or release energy. One indication that energy has been absorbed or released is a change in temperature. An endothermic reaction is a reaction in which energy is absorbed. A ______ that releases __________ in the form of heat is called an _______ reaction.
Reaction, Energy, Exothermic
As matter changes in a chemical reaction, it can either absorb or release energy. One indication that energy has been absorbed or released is a change in temperature. An endothermic reaction is a reaction in which energy is absorbed. A reaction that releases __________ in the form of heat is called an ________- reaction.
Energy, Exothermic
As _______ changes in a _________ reaction, it can either ________ or _______ energy. One indication that energy has been absorbed or released is a change in temperature. An endothermic reaction is a reaction in which energy is absorbed. A reaction that releases energy in the form of heat is called an exothermic reaction.
Matter, Chemical, Absorbed, Released