Physical Science – Chapter 2 Study Guide
Name: ______Period: ______
Use your notebook AND your textbook to complete the following study guide. Don’t forget, the test will also include density problems so study the density problems we did in class
1. ______change – affects one or more physical properties of a substance without changing its identity.
2. List three examples of a physical property: ______
3. An object burning in the presence of oxygen. ______
4. ______– The ratio of atoms and the symbols that make up a compound.
5. Matter has ______and takes up ______.
6. ______– Has a fixed composition & definite properties. (All molecules are the same).
7. Italian salad dressing is an example of a ______.
8. Physical properties of ______are typically ______.
9. Chemical properties describe how a substance can change into a new substance either by ______OR ______.
10. Smell, fizzing, foaming, and/or a color change are indicators of a ______change.
11. Are made up of atoms of two or more elements: ______.
12. Chemistry – made up of three parts. Name them: ______
______
13. All matter is made up of ______.
14. ______substances are not mixed evenly.
15. Grinding wheat into flour is an example of a ______change.
16. Which of the following is NOT an example of a physical property?
A. freezing point B. reactivity C. boiling point D. density
17. Which of the following is an example of a gas-liquid mixture?
A. the air we breathe B. a helium balloon C. a carbonated drink D. ice cubes
18. Digesting food is an example of a(n)___.
A. physical change B. chemical change C. change of state D. buoyancy
19. Which of the following is an example of a chemical change?
A. ice melting B. pounding gold into a coin C. paint fading D. a puddle of water evaporating
20. Which of the following is made of at least two different types of atoms?
A. element B. molecule C. compound D. matter
21. The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?
A. 3 B. 5 C. 6 D. 7
Complete the following chart: How many atoms are in each molecule? Be sure to follow the given example (NUMBER 1) .
1. / C12H22O11 / C – Carbon = 12H – Hydrogen = 22
O – Oxygen = 11
TOTAL ATOMS = 45 / 7. / CoBr2
2. / Al2O3 / 8. / PbO
3. / NH3 / 9. / MnF4
4. / AsH3 / 10. / Na2SO4
5. / CaCl2 / 11. / H2XeO4
6. / C17H21NO4 / 12. / C4H7ClO
Chemical Change OR Physical Change?
1. / Cooking an egg / 7. / Melting butter2. / Molding bread / 8. / Tree leaves changing color in the fall
3. / Ice cube melting / 9. / Burning firewood
4. / Breaking a bottle / 10. / Rusting iron pan
5. / Digestion / 11. / Brass tarnishing
6. / Fireworks explosion / 12. / Sanding a piece of wood