Chemistry 1 Semester 1 Final Review 24-25
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What type of change is represented by the equation Li + Be → B?
Back
Nuclear change.
2.
FLASHCARD QUESTION
Front
What is the region around the nucleus of an atom where there is a high probability of finding an electron called?
Back
Orbital.
3.
FLASHCARD QUESTION
Front
Which equation represents Charles's Law?
Back
V1/T1 = V2/T2 or V1T2 = V2T1.
4.
FLASHCARD QUESTION
Front
How do you calculate the percent by mass of a component in a mixture?
Back
(mass of component / total mass of mixture) x 100.
5.
FLASHCARD QUESTION
Front
What is the percent by mass of component C if Component A = 21.8 g, Component B = 27.3 g, and Component C = 35.1 g?
Back
41.7%.
6.
FLASHCARD QUESTION
Front
What type of radiation consists of helium nuclei and is the least penetrating?
Back
Alpha radiation.
7.
FLASHCARD QUESTION
Front
Define a chemical change.
Back
A process where substances combine or break apart to form new substances.
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