Chem 101 Midterm Ivy Tech Exam Test with Answers
1. Which of the following is considered a hypothesis (as
opposed to an observation)?
Birds can fly be-
cause they have
hollow bones
2. Which of the following would be considered a theory? Helium balloons
float because heli-
um is less dense
...
1. Which of the following is considered a hypothesis (as Birds can fly be-
opposed to an observation)? cause they have
hollow bones
2. Which of the following would be considered a theory? Helium balloons
float because heli-
um is less dense
than air.
3. Which of the statements below is NOT part of the All of the above
scientific method? steps are part
of the scientific
method.
4. Which statement about a hypothesis is TRUE? All of the above
statements are
true.
5. Who discovered the law of conservation of mass? Antoine Lavoisier
6. The distance between two hydrogen atoms in a mol- 1.72 x 10^-10 m
ecule of water 0.0000000000172 m. Express this dis-
tance in scientific notation.
7. Which of the following would NOT be considered a 1 pair of shoes = 1
correct conversion factor? shoe
8. In the number 48.93, which digit is estimated? 3
9. The correct number of significant figures in the num- 5
ber 0.027090 is:
10. The base SI unit for temperature is: Kelvin
11. The correct scientific notation for the number 5.0210 x 10^-4
0.00050210 is:
12. How many inches are in 25.8 cm? 10.2 in
13.
1/5
, Which of the following statements is NOT part of the Non-zero digits at
rules for determining significant figures? the end of a num-
ber are not signifi-
cant.
14. The correct number for significant figures in the num- 7
ber 1.250100 is:
15. How many milliliters are in 17.5 L? 1.75 x 10^4 mL
16. Which state of matter has atomic spacing that is close Solid
together and definite shape?
17. Which state of matter has atomic spacing that is far Liquid
apart and definite shape
18. What is the calue of 783 K in units of C 510 C
19. In order, what is the freezing point, room temperature 32-75-212
and boiling point of water according to the Celsius
scale?
20. Which state of matter has indefinite shape and is Gas
compressible?
21. How would you classify raisin bran? mixture- heteroge-
neous
22. Which type of energy is associated with the burning Chemical
of gasoline?
23. Which of the following is a heterogeneous mixture? Raisin bran
24. Which of the following statements about compounds A substance com-
is TRUE? posed of two or
more elements is
fixed, definite pro-
portions.
25. Which among the following statements is FALSE? None of the above
2/5
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