1) What is an experiment? a) a test b) a measurement c) a pattern d) a controlled test 2) What is a hypothesis? a) a controlled test b) an educated guess c) a measurement d) a scientific guess 3) In an experiment, I will use the same sunlight and water. Those are... a) a variable b) a controlled variable c) an uncontrolled variable 4) Taste, touch, sight, smell and hearing are your ... a) five scenes b) five senses c) five stems d) five variables 5) A set of answers is ... a) observation b) data c) an experiment d) conclusions 6) In the acid rain experiment, the acid was... a) vinegar b) water c) alum d) acidity 7) The water cycle includes... a) earthquakes b) flooding c) rain, sleet, hail d) hurricanes 8) This can kill plants and has water with many harmful elements? a) earthquakes b) acidity c) acid rain d) pollution 9) A hygrometer measures... a) wind b) water c) hunger d) humidity 10) Interpreting data is to... a) organize it b) collect it c) record it d) figure it out 11) Mass and occupies space is defined as ... a) matter b) atoms c) atomic weight d) controlled variables 12) An __________________ is a substance that each consist of only one kind of atom. a) compound b) atom c) element d) substance 13) The periodic table has elements arranged by their... a) atomic weight b) atomic number c) atomic mass 14) Helium is a ... a) transition metal b) alkali metal c) noble gas d) oxygen gas 15) Which is true for Mercury? a) Hi b) 259 c) 84 d) 200.59 16) Which element is found in the same row of the periodic table as Bohrium (Bh)? a) molybdenum (Mo) b) radium (Ra) c) rhenium (Re) d) radon (Rn) 17) Which element is Sr a) strontium b) sulfur c) antimony d) seaborgium 18) An explanation of the experiment is called ... a) a conclusion b) a hypothesis c) a record of data d) a graph with data on it 19) A compound is made of two or more elements. a) true b) false 20) The alum crystal had water that was _________________ with alum. a) mixed b) without c) saturated d) hot 21) Atomic Number equals the number of ________________ in an atom’s center. Atomic Number equals the number of ________________ in an atom’s center.  a) neutrons b) protrons c) electrons

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