Semester Exam for first semester, Exams of Chemistry

Download Semester Exam for first semester and more Exams Chemistry in PDF only on Docsity! Name: ________________________________________ Date: ______________ Period: _____ Semester Exam Write the letter of the correct answer in the space provided: 1. ____ What does the word atomos mean? a. invisible b. indivisible c. . divisible d. divided 2. ____ If an unknown solid weights 84.0 grams and occupies 33.0 cm3 of space. What is its density? a 5.6 g/cm3 b. 2.55 g/cm3 c. 2.55 cm3/g d. 5.6 cm3/g 3. _____Density has which units? a. g/ml and g/cm3 b. g/m and g/cm3 c. g/mL d. g and cm3 4. ____ What about a proton is NOT true? a Negatively charged b. Positively charged c. mass of 1 amu d. determine identity of atom 5. _____How many meters are in 1 Kilometer a. 10 b. 1000 c. 100 d. .001 6. ____ The atomic number is the number of _____ in an atom a Electrons b. Neutrons c. Particles d. .Protons 7. ____ Mercury (Hg) has how many neutrons? a. 121 b. 75 c. 80 d. 201 8. _____ How many groups are on the periodic table? a. 8 b. 18 c. 7 d. 15 9. _____Which element is an exception for finding out the number of valence electrons by counting? a. He b. Ne c. S d. Ar 10. _____ The amount of space an object takes up is? a. Meter b. Density c. Mass d. Volume 11. Where can valence electrons be found? a. In the electron cloud b. In the outermost shell c. Outside of the atom d. In the nucleus 12. Which example is NOT a solute? a. Sugar b. Salt c. Drink Mix d. Water 13. Which state of matter has a indefinite shape AND an indefinite volume? a. Solid b. Liquid c. Gas d. Plasma