1) smallest particle of matter a) mixture b) atom c) model 2) a group of atoms bonded together a) mixture b) molecule  c) model 3) a special molecule made when 2 or more different atoms are bonded together a) compound b) atom c) molecule 4) a pure substance made of only 1 kind of atom a) element b) atom c) molecule 5) something scientist make to answer questions about the real world a) mixture b) atom c) model 6) to use any of the five senses to gather information about something a) evidence b) inference c) observe 7) information that supports an answer to a question a) evidence b) inference c) observe 8) what you can observe or measure about something that helps you identify or describe it a) evidence b) atom c) property 9) to pull on an object even without touching it a) repel b) attract c) dissolve 10) to mix evenly into a liquid by breaking apart into pieces that are too small to see a) explain b) closed system c) dissolve 11) able to dissolve in water or another liquid a) dissolve b) sugar c) soluble 12) solid melting into a liquid a) physical change b) chemical change 13) baking soda and vinegar creating bubbles a) physical change b) chemical change 14) Variable that stays the same for all groups a) independent b) dependent c) contol 15) Variable that can be measured a) independent b) dependent c) contol 16) Variable that is changed a) independent b) dependent c) contol 17) Why does sugar dissolve in water? a) sugar molecules are not attracted to water molecules b) sugar molecules are attracted to water moleucles 18) Why does pepper not dissolve in water? a) pepper molecules are not attracted to water molecules b) pepper molecules are attracted to water moleucles 19) What is the name of a substance that can force two molecules to be attracted to each other? a) emulsifier b) solution c) bonding agent 20) What kind of system is represented in this picture? a) open system b) closed system

Modeling Matter vocab

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