
Chemistry S1 Review (without electron configurations)
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What do carbon-12 and carbon-14 have in common?
Back
They have the same number of protons.
2.
FLASHCARD QUESTION
Front
Which of these is an element? Salt (NaCl), Water (H2O), Oxygen (O), Carbon Dioxide (CO2)
Back
Oxygen (O) is an element.
3.
FLASHCARD QUESTION
Front
What is the half-life of a substance?
Back
The half-life of a substance is the time required for half of the substance to decay.
4.
FLASHCARD QUESTION
Front
If the half-life of Zn-71 is 2.4 minutes, how much of a 100.0 g sample remains after 7.2 minutes?
Back
12.5 g remains after 7.2 minutes.
5.
FLASHCARD QUESTION
Front
What state of matter has a definite shape and volume?
Back
Solid has a definite shape and volume.
6.
FLASHCARD QUESTION
Front
What state of matter has a definite volume but no definite shape?
Back
Liquid has a definite volume but no definite shape.
7.
FLASHCARD QUESTION
Front
What state of matter has neither a definite shape nor a definite volume?
Back
Gas has neither a definite shape nor a definite volume.
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