Particle Theory of Matter Quiz #1 Name___________________ 1) Put the following in order (3 Marks) a. Brainstorm possibilities b. Make a model c. Collect and study related ideas (research) d. Define the problem e. Try it out ... test it! f. Develop a design plan Order them here _____, _____, _____, _____, _____, _____ 2) The six steps above are called ______________________________________ (2 Marks) 3) You need to purchase a vehicle for your family, what criteria do you feel is most important when making this decision (2 Marks – list at least your top 4) 4) Using the graph below, identify (4 Marks - 2 marks each) a. the boiling point of substance A. Justify your response using the particle theory of matter b. the melting point of substance A. Justify your response using the particle theory of matter Temperature (◦C) Substance A: Temperature Verses Time 120 100 80 60 40 20 0 5 4 3 2 1 10 20 30 40 50 Time (min) 5) Indicate the state of matter at point #3 ________________________(1 Mark) 6) At which point is the volume the smallest ______________________(1 Mark) 60 70 7) Define Volume (1 Mark) 8) True or False (1 Mark each – Circle) TRUE TRUE TRUE TRUE TRUE FALSE FALSE FALSE FALSE FALSE The volume of matter will increase as it is heated Boiling point is a physical property of a pure substance Heat is the relative measure of how hot or cold something is Current scientific theory states: all matter is made of particles Particles are more attracted to each other in the gaseous state of matter 9) Students were conducting an experiment to test two different potting soils. Their results are charted and shown below. Time (Weeks) 0 1 2 3 4 5 Soil A Average Plant Height (cm) 0 3 9 19 41 67 Soil B Average Plant Height (cm) 0 4 14 25 49 83 Help them to write a proper hypothesis for this experiment (Remember a hypothesis is written BEFORE data collection) (1 Mark) Neatly and properly graph their results below (5 Marks) 10) Define variable (1 Mark) 11) In the experiment above which variable is the independent variable? Explain (2 Marks) 12) In the experiment above which variable is the dependent variable? Explain (2 Marks) 13) List three other variables that should have been considered to ensure that this was a “fairtest” (3 marks) 14) Properly use the word “Heat” in a sentence as defined in our class. (One Mark) Ethanol is a clear liquid with a boiling point of 78.37 ◦C. Students heat an unknown clear liquid on a hot plate observe the results below: Is this unknown liquid ethanol? Explain (2 Marks) Time (minutes) 0 1 2 3 4 5 6 7 8 9 Temperature ◦C 20 32 44 56 68 78 78 78 78 78 15) Define Pure Substance (1 Mark) 16) A student wanted to melt snow (solid water) and placed a glass beaker on a hot plate. The beaker cracked. Using the particle theory of matter, explain why this occurred (1 Mark) 17) Look at the diagram below. Which container has the most energy? Explain using the particle theory of matter (2 Marks) A: 500 ml of H2O @ 50 ◦C A: 500 ml of H2O @ 20 ◦C