G-8 English model exam 1, Arada 2017 (Answer + Explantion).pdf
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1. In 1897, J.J. Thomson discovered a subatomic particle using a cathode ray tube. Which particle was it?
Anonymous Quiz
14%
Proton
11%
Neutron
65%
Electron
10%
Alpha particle
β1. Yesterday, the student ____ the chemistry experiment in the lab.
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7%
perform
78%
performed
8%
performs
6%
performing
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β2. Ernest Rutherford performed the gold foil experiment. What did he conclude about the center of the atom?
Anonymous Quiz
23%
It was empty space
65%
It was a dense, positive nucleus
10%
It was negatively charged
2%
It contained only electrons
2. We ____ the law of supply and demand in our economics class last week.
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13%
study
69%
studied
7%
studies
11%
was study
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β3. When John Dalton developed his atomic theory, how did he describe atoms?
Anonymous Quiz
78%
As tiny, indivisible spheres
11%
As soft clouds of energy
9%
As solar systems
3%
As liquid droplets
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3. The teacher ____ us five difficult questions during the last period.
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52%
gave
14%
give
23%
given
11%
gives
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4. A student looked at an element with atomic number 11. How many protons did that atom have?
Anonymous Quiz
15%
22
10%
5
6%
12
69%
11
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4. They ____ to the library to find books about atomic structure.
Anonymous Quiz
50%
go
20%
goes
28%
went
3%
gone
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β5. During an experiment, an atom lost an electron. What did the atom become?
Anonymous Quiz
54%
A positive ion (cation)
32%
A negative ion (anion)
10%
A neutral molecule
4%
A new element
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β5. I ____ my homework before I went to sleep.
Anonymous Quiz
19%
finish
6%
finishes
6%
finishing
68%
finished
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