Molecules and compounds

Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
What are molecules?
Back
Molecules are made up of two or more atoms bonded together.
3.
FLASHCARD QUESTION
Front
How many atoms of oxygen are in carbon dioxide (CO₂)?
Back
There are 2 atoms of oxygen in carbon dioxide.
4.
FLASHCARD QUESTION
Front
How many hydrogen atoms are in 2H₂O?
Back
There are 4 hydrogen atoms in 2H₂O.
5.
FLASHCARD QUESTION
Front
What happens to elements when they form compounds?
Back
When elements form compounds, they lose their individual chemical properties and take on new properties.
6.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical formula?
Back
A coefficient is a number placed in front of a chemical formula that indicates how many molecules are present.
7.
FLASHCARD QUESTION
Front
What is the difference between an atom and a molecule?
Back
An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.
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