Unit 4 Practice Test ALL

Flashcard
•
Chemistry
•
10th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the correct formula for lithium oxide?
Back
Li₂O
2.
FLASHCARD QUESTION
Front
What happens to an atom when it gains electrons?
Back
It becomes negative because it has added electrons.
3.
FLASHCARD QUESTION
Front
What must the last part of a compound's name be when naming it?
Back
The element with 'ide' at the end, unless it's a polyatomic ion.
4.
FLASHCARD QUESTION
Front
How many molecules are in a mole of methane (CH₄)?
Back
6.022 x 10²³
5.
FLASHCARD QUESTION
Front
When naming ionic compounds with transition metals, what must be included?
Back
Roman numerals to show the charge of the metal.
6.
FLASHCARD QUESTION
Front
What is the definition of a mole in chemistry?
Back
A mole is a quantity that contains 6.022 x 10²³ entities (atoms, molecules, etc.).
7.
FLASHCARD QUESTION
Front
What is the significance of the 'ide' suffix in compound naming?
Back
It indicates that the compound is formed from two elements, typically a metal and a non-metal.
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