Science Flashcard
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
Tonya Betancourt
Used 5+ times
FREE Resource
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45 questions
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1.
FLASHCARD QUESTION
Front
Which statement describes the behavior of molecules when a substance changes from a gas to a liquid?
Back
The speed of the molecules decreases, because they have lower kinetic energy in the liquid state.
2.
FLASHCARD QUESTION
Front
Which element contains 20 protons and 19 electrons?
Back
An ion of calcium
3.
FLASHCARD QUESTION
Front
Why are the elements neon and argon not reactive?
Back
They have the maximum possible number of electrons in their outermost shell.
4.
FLASHCARD QUESTION
Front
Which element is shown in the image?
Back
Carbon
5.
FLASHCARD QUESTION
Front
According to placement in the periodic table, why is an ionic bond most likely to form between a metal and a nonmetal?
Back
An ionic bond forms between oppositely charged ions; metals and nonmetals are likely to be oppositely charged.
6.
FLASHCARD QUESTION
Front
A student wants to transform a sample of gaseous carbon dioxide into solid carbon dioxide. What must she do to accomplish this task?
Back
Remove energy from the sample.
7.
FLASHCARD QUESTION
Front
The table below lists the number of protons and neutrons contained in four different atoms. Which two atoms are isotopes of the same element?
Back
Atom 2 and Atom 3
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