true a molecule an atom a compound a mixture Q1: The smallest part of an element is - 2 false an atom an element a solution a molecule Q2: The smallest part of a compound is - 4 false compounds elements solutions mixtures Q3:Water (H2O) and table salt (NaCl) are - 1 false compounds elements solutions mixtures Q4: Hydrogen (H), oxygen (O), and carbon (C) are - 2 false an atom an element a compound a solution Q5: Dissolving sugar in water creates - 4 false a solution an atom a mixture a compound Q6: Two or more elements can combine chemically /nto form a completely new substance, called - 4 false a solid a liquid a gas none of the above .. 3 true #1 - the solid #2 - the liquid #3 - the gas none of the above .. 3 true over 100 about 5 million 1000 - 2000 around 10 Q9: How many atoms can fit in the period /nat the end of a sentence? 2 false A solid A liquid A gas none of the above Q10: Which keeps the same volume but changes /nshape? 2 false oxygen chlorine, nitrogen gold, iron, aluminum helium, sodium, carbon water (H2O), /ncarbon dioxide (CO2), /ntable salt (NaCl) Q11: Which are not elements? 4 false compound mixture element solution Q12: Oceans contain water, salt and other /nminerals. Ocean water is a - 2 false compound mixture element solution Q13: The air we breathe includes the elements /nnitrogen and oxygen, as well as the compound /ncarbon dioxide. Air is a - 2 false compound mixture element solution Q14: A mixture in which one substance /ndissolves into another is: 4 false over a million about 10 100-120 over a thousand Q15: How many known elements are there? 3 false