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chem quiz 1
| Question | Answer |
|---|---|
| Matter What is matter? | the substances that make up our world. Everything is matter: air, water, wood, soap, etc. Anything that takes up space. |
| Chemistry | study of the composition, structure, properties, and reactions of matter |
| The scientific method is how scientists think….explain these steps: OBSERVATION, HYPOTHESIS, EXPERIMENT, CONCLUSION | 1. Make observations and ask a question about the observation 2. Hypothesize (initial thought) a possible explanation of the observations 3. Conduct experiments (reason for explanation) to test the hypothesis 4. Use results to reach a conclusion |
| Identify as an observation, hypothesis, experiment, or conclusion: eating salsa gives me heartburn | Observation/Conclusion |
| Identify as an observation, hypothesis, experiment, or conclusion: If I stop eating salsa, my heartburn will go away | Hypothesis |
| Identify as an observation, hypothesis, experiment, or conclusion: I will stop eating salsa for 10 days, then eat salsa twice a week for the next 10 days, and record each time I have heartburn in a journal | Experiment |
| Identify as an observation, hypothesis, experiment, or conclusion: During an emergency room assessment, a nurse writes that the patient has a resting pulse of 30 beats per minute | Observation |
| Identify as an observation, hypothesis, experiment, or conclusion: The nurse thinks that an incision from a recent surgery that is red and swollen is infected | Hypothesis |
| Identify as an observation, hypothesis, experiment, or conclusion: If I stop drinking coffee at night, I will be able to sleep at night | Hypothesis |
| Identify as an observation, hypothesis, experiment, or conclusion: I will try drinking coffee only in the morning | Experiment |
| Volume | Amount of SPACE |
| Mass | Amount of MATTER |
| What are the prefixes used to make the base unit LARGER starting with deca, 10, 10^1 | Deca 10 10^1 Hecto 100 10^2 Kilo 1,000 10^3 Giga 1,000,000,000 10^9 Tera 1,000,000,000,000 10^12 |
| What are the prefixes used to make the base unit SMALLER starting with decimal, 0.1, 10^-1 (1/10) | Deci 0.1. 10^-1 (1/10) Centi 0.01 10^-2(1/100) Milli 0.001 10^-3(1/1,000) Micro 0.000001 10^-6(1/1,10^6) Nano 0.000000001 1-^-9(1/10^9) |
| How many SF: 1001 | 4....If there is a digit on either end and its not a decimal, they all count as significant |
| How many SF: 0.000579 | 3....zeros before digits in a decimal are not SF |
| How many SF: 123,000 | 3...Only 3 because zeros at the end of long numbers don't count |
| How many SF: 10.000 | 5....THey all count since its a decimal |
Created by:
lindsayanderson