Chemistry, 04.10.2021 01:30 ZachLaVine2016
Direction: Choose the correct answer. Write your answer on your answer sheet.
1. A statement that answers the scientific problem based on the results of the experiment.
a. experiment b. hypothesis c. conclusion d. variable
2. An educated guess that may lead to a possible solution to the problem.
a. experiment b. hypothesis c. conclusion d. variable
3. What skill is used when you listen to the sounds produced by different types of vehicles?
a. analyzing data b. drawing conclusions
c. making a hypothesis d. making observations
4. .The variable being changed in the experiment
a. independent variable b. independent variable
c. control variable d. dispensable variable
5. What is the first step in scientific method?
a. analyzing data b. drawing conclusions
c. making a hypothesis d. making observations
6. What are the three types of variables used in scientific experiment?
a. independent, dependent, observed b. controlled, dependent, independent
c. identical, observed, quantitative d. independent, measurable, dependent
7. Which shows a scientific way of thinking?
a. State that all brands of gasoline will work well in any car.
b. Say that there is no truth in the existence of dinosaurs since no one has seen them.
c. Suggest that cats are better pets than dogs because they cuddle up to their owners.
d. Check if flatiron consumes more than a radio by looking at the electric meter when each is
being used.
For items 8-10: A group of students was asked to investigate how fast sugar dissolves in cold and in hot
water?
8. If this is going to be a fair test, what variables should they control?
a. Amount of water and sugar in each cup, method of stirring, time when the solid is added to
water, how long each solution is stirred.
b. Amount of water and sugar in each cup, method of stirring, how long each solution is stirred.
c. Amount of sugar in each cup; method of stirring, time when the solid is added to water, how
long each solution is stirred.
d. Amount of water in each cup, method of stirring, time when the solid is added to water; how
long each solution is stirred.
9. What is the dependent variable (what is being measured)?
I. the temperature of water III. the length of time that sugar completely dissolves in hot water
II. the amount of sugar IV. the length of time that sugar completely dissolves in cold water
a. I only b. II only c. II and III d. III and IV
10. What is the independent variable in the investigation?
a. I only b. II and III c. I, II and III d. II, III and IV
Answers: 2
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One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)
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Chemistry, 22.06.2019 15:30
Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.
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Chemistry, 22.06.2019 17:10
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
Direction: Choose the correct answer. Write your answer on your answer sheet.
1. A statement that...
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