1) All known elements are organized by their properties on the ____________ __________. a) Periodic Table b) Christmas tree 2) An element is a _______ substance because no matter what you do to its atoms, it always remains the same.  a) pure 67 b) mixture 3) An element is a pure substance that can NOT be be broken down into any other parts , or things.  a) True b) False 4) Salt and water are two substance physically mixed together, salt water is _______? a) a mixture b) a eleme67nt 5) If you have an improper substance that can be separated physically by processes it is a _________________ change.  a) physical b) chemical c) Stalin 6) Which of the following is a single substance?  a) Chlorine gas  b) Air c) Salt water d) Hydrochloric acid solution 7) Blood looks the same, but can be easily separated by its different parts. Blood ca be classified as a ___________ containing many compounds. a) mixture b) compound c) Yummy 8) The air we breathe is made of many different types of elements. Air is a ________ball_____ made of compounds.   a) mixture b) element c) 9) Air is largely a combination of Nitrogen and Oxygen gases. When physically combined air is considered a __________?  a) . b) element of two gases 10) When you combine two or more types of gases you create a mixture of __________? a) gases b) compounds 11) A mixture is - a) an impure substance made through physical processes b) elements that are all the same c) Sour milk is delicous 12) A mixture is an ... a) impure substance b) pure substance c) Purdolf Catler 13) Coke is made of sugar and water. Soda is considered a _______________ because its parts can be separated by physical means.  a) mixture b) element 14) Air is made of a bunch of elements chemically combined. Air is a _______ a) mixture b) element 15) When you physically mix two substances you have created a _____________________? a) mixture b) compound c) element d) Painter who failed 16) Compounds are ___________________ combined.  a) chemically b) physically c) not d) Communism Fatty  17) What do you call an element that has been chemically combined with another element? a) A compound b) An element c) Tank 18) Which of the following 2 things can be considered a PURE substance?  a) An element b) A compound c) A mixture d) 67 6776767676767676767676767

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