100 questions - year 10
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Clare Bishop
FREE Resource
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93 questions
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1.
FLASHCARD QUESTION
Front
List the three states of matter in increasing order of particle energy.
Back
Solid Liquid Gas
2.
FLASHCARD QUESTION
Front
In which two states can diffusion occur?
Back
Liquid and Gas
3.
FLASHCARD QUESTION
Front
How could you confirm whether a substance is pure or impure?
Back
Measure its melting or boiling point. Pure substances have fixed, sharp melting/boiling points.
4.
FLASHCARD QUESTION
Front
Give the lowest and highest possible values for any Rf value.
Back
0.00 and 1.00
5.
FLASHCARD QUESTION
Front
Why do atoms have no overall charge?
Back
They have equal numbers of protons and electrons.
6.
FLASHCARD QUESTION
Front
Define the term "isotopes."
Back
Atoms with the same number of protons but with different numbers of neutrons.
7.
FLASHCARD QUESTION
Front
Give the period number of the atom with electron configuration 2,8,7.
Back
3
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