Elements Molecules and Mixture Review 2024

Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A molecule is a group of two or more atoms bonded together. It can be made up of the same or different types of atoms.
Tags
NGSS.MS-PS1-1
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together.
Tags
NGSS.MS-PS1-1
3.
FLASHCARD QUESTION
Front
Is ozone (O₃) a molecule or a compound?
Back
Ozone (O₃) is a molecule, but it is not a compound because it consists of only one type of element.
Tags
NGSS.MS-PS1-1
4.
FLASHCARD QUESTION
Front
How many atoms are in a molecule of water (H₂O)?
Back
A molecule of water (H₂O) contains 3 atoms: 2 hydrogen atoms and 1 oxygen atom.
Tags
NGSS.MS-PS1-1
5.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula indicate?
Back
The subscript in a chemical formula indicates the number of atoms of the element present in the molecule.
6.
FLASHCARD QUESTION
Front
How many oxygen atoms are in carbon dioxide (CO₂)?
Back
There are 2 oxygen atoms in carbon dioxide (CO₂).
Tags
NGSS.MS-PS1-1
7.
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.
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