Compounds and Molecules
Flashcard
•
Science
•
9th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together.
2.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.
3.
FLASHCARD QUESTION
Front
What does a subscript in a chemical formula indicate?
Back
A subscript indicates the number of atoms of the element present in one molecule of the compound.
4.
FLASHCARD QUESTION
Front
In the formula H₂O, what do the numbers represent?
Back
The numbers represent the number of hydrogen (2) and oxygen (1) atoms in one molecule of water.
5.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.
6.
FLASHCARD QUESTION
Front
What is the chemical formula for ammonia?
Back
The chemical formula for ammonia is NH₃.
7.
FLASHCARD QUESTION
Front
How many total atoms are in one molecule of CO₂?
Back
There are 3 total atoms in one molecule of CO₂ (1 carbon atom and 2 oxygen atoms).
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