What is Matter? mass Matter is anything that has ___________ and takes up ___________. What are some examples of matter? ____________________________________________________________________ Is light matter? _______________ Is wood matter? _______________ Is air matter? ______________ space No Yes Yes

Classifying Matter All matter can be classified into one of several groups based on the properties of the substances. __________________ are substances that are made up of only one type of particle. Pure substances have a _______ composition _______________ and _________________ are pure substances Pure Substances fixed Elements compounds

Classifying Matter – Elements Elements cannot be broken down into simpler substances through __________ or _______________ processes. Elements are made of atoms. ________ are the smallest particles that still have the properties of that element. Atoms join together to form ____________. chemical physical Atoms compounds

Classifying Matter – Compounds __________________ can be broken into the atoms that make them up through chemical processes. Compounds are unique and different from the _____________ they contain. Water is a compound made of _____________ and _____________. The smallest unit of a compound is called a ________________. elements hydrogen oxygen molecule

Classifying Matter – Mixtures Mixtures vs. pure substances A _________________ is matter that has a fixed composition and cannot be broken down or separated by a physical change. A ________________ is a combination of two or more pure substances that can be separated by a physical change. pure substance mixture

Classifying Matter – Mixtures Mixtures are classified by how well they mix ____________________ mixtures are not uniformly mixed and do not look the same throughout. One example is flour mixed with water. The mixture looks like muddy water. ____________________ mixtures look the same throughout. An example would be salt water. Heterogeneous Homogeneous

Classifying Matter – Mixtures ______________ liquids are able to dissolve into each other, and form a homogeneous mixture. __________________ liquids are heterogeneous and form layers of liquid. Gases can also mix with liquids Miscible Immiscible

Classifying Matter – Mixtures Homogeneous Mixtures are known as _______________ There are two types of heterogeneous mixtures Suspensions and Colloids _________________ have large particles that will settle out of the mixture _________________ have particles that are smaller and do not settle out. solutions Suspensions Colloids

Elements Compounds Matter Mixtures Pure Substances Heterogeneous Homogeneous

Physical and Chemical Properties A ______________ property is the way a substance reacts to form new substances with different properties. ___________ is the ability of a substance to combine chemically with other substances. Examples of Chemical Properties _____________________________________________ Reactivity

Physical and Chemical Properties Physical properties are characteristics of a substance that can be observed or measured without changing the ___________________ of the substance. Ex. ________________________________ Ex. _____________________________________ composition

Physical and Chemical Changes A ___________________ change occurs when a substance changes composition by forming one or more new substances. Referred to as chemical reactions Ex. ____________________________________ Chemical changes occur when the atoms are either broken apart from each other or _______________ to form new substances The atoms do not change their ___________ rearranged identities

Physical and Chemical Changes Physical changes do not change the ________________ of the substance. The substance may look different, but it is still made of the same substances. Ex. ____________________________________ _______________ is a physical change. Salt water tastes the same as table salt, because the ________________ of the salt does not change when dissolved. composition Dissolving composition