What is the symbol for electromagnetic energy that is known as gamma radiation?
Chemistry Exam 2024

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Chemistry
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Gamma (γ)
2.
FLASHCARD QUESTION
Front
Who proposed the atomic theory stating that atoms are indivisible?
Back
John Dalton
3.
FLASHCARD QUESTION
Front
What is a sign of a chemical reaction that involves a change in temperature?
Back
Change in temperature is a sign of a chemical reaction.
4.
FLASHCARD QUESTION
Front
How many moles are present in 32.3 grams of carbon dioxide (CO2) if the molar mass is 44 g/mol?
Back
0.73 moles
5.
FLASHCARD QUESTION
Front
What is the correct representation of hydrogen gas in a chemical equation?
Back
H₂
6.
FLASHCARD QUESTION
Front
What is the definition of a mole in chemistry?
Back
A mole is a unit that measures the amount of substance, defined as containing exactly 6.022 x 10²³ particles.
7.
FLASHCARD QUESTION
Front
What is the molar mass of carbon dioxide (CO2)?
Back
The molar mass of CO2 is 44 g/mol.
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