1) The smallest unit of matter is the... a) element b) molecule c) atom d) electron shell 2) Which of the following is a molecule? a) carbon (C) b) gold (Au) c) water (H2O) d) hydrogen (H) 3) Which of the following is an example of a molecular formula? a) C6H12O6 b) H2O c) O3 d) all of them are molecular formulas! 4) When matter is made from more than one of the exact same type of atom we call this an... a) molecule b) compound c) phase change d) element 5) There are about ______ atoms that have been discovered, which are all organized into the periodic table of elements.... a) 90 b) 40 c) 130 d) 120 e) 85 6) All matter has the following... a) mass and energy b) energy and volume c) mass, volume & energy d) mass & volume 7) A molecular formula will contain... a) symbols b) numbers c) types of atoms d) all answers are correct 8) Select the atoms that make up "CHON" a) Carbon b) Helium c) Oxygen d) Neon e) Hydrogen f) Nitrogen 9) Look at the picture of the periodic table. Give the symbol for sodium... a) S b) Sd c) Na d) none are correct 10) Atoms are... a) combined to make molecules b) listed on the periodic table c) the building blocks of matter d) all answers are correct 11) The amount of space something takes up is it's... a) mass b) weight c) volume d) density 12) Which of the following is NOT true about mass? a) The unit for mass is grams b) Mass does not depend on gravity c) Mass can only be measured using a special scale d) The mass of something depends on it's weight

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