CHM 103 EXAM 1 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
Which of these is correctly expressed in scientific notation?
a. -1.46x10^-2
b. 0.02243x10^-3
c. 34.5x10^-4 -ANSWER ✔✔A
Which isotope has the same number of neutrons as 58Ni?
a. 32S
b. 57Co
c. 60Cu -ANSWER ✔✔B
which are the correct symbols for silver, copper, sulfer and titanium?
a. As, C, Hg, and I
b. Au, Co, K, and Na
C. Ag, Cu, S, and Ti -ANSWER ✔✔C
characteristic of a heterogeneous solution -ANSWER ✔✔the composition is
different depending on what part you sample
What is mass of an object? -ANSWER ✔✔the amount of matter in an object
examples of chemical properties of matter -ANSWER ✔✔surface of object
turns black in air, object produces a gas when in acid, object does not burn
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
Which of these is correctly expressed in scientific notation?
a. -1.46x10^-2
b. 0.02243x10^-3
c. 34.5x10^-4 -ANSWER ✔✔A
Which isotope has the same number of neutrons as 58Ni?
a. 32S
b. 57Co
c. 60Cu -ANSWER ✔✔B
which are the correct symbols for silver, copper, sulfer and titanium?
a. As, C, Hg, and I
b. Au, Co, K, and Na
C. Ag, Cu, S, and Ti -ANSWER ✔✔C
characteristic of a heterogeneous solution -ANSWER ✔✔the composition is
different depending on what part you sample
What is mass of an object? -ANSWER ✔✔the amount of matter in an object
examples of chemical properties of matter -ANSWER ✔✔surface of object
turns black in air, object produces a gas when in acid, object does not burn
