Elements and Compounds
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Science
•
7th Grade
•
Hard
+1
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an element?
Back
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is made up of atoms that have the same number of protons.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more elements chemically bond together in fixed proportions. Compounds have different properties than the elements that make them up.
Tags
NGSS.MS-PS1-1
3.
FLASHCARD QUESTION
Front
What is the chemical formula for table salt?
Back
The chemical formula for table salt is NaCl, which consists of sodium (Na) and chlorine (Cl) in a 1:1 ratio.
Tags
NGSS.MS-PS1-1
4.
FLASHCARD QUESTION
Front
What is the chemical formula for methane?
Back
The chemical formula for methane is CH4, which consists of one carbon (C) atom and four hydrogen (H) atoms.
Tags
NGSS.MS-PS1-1
5.
FLASHCARD QUESTION
Front
What is the chemical formula for oxygen gas?
Back
The chemical formula for oxygen gas is O2, indicating that it is made up of two oxygen (O) atoms.
Tags
NGSS.MS-PS1-1
6.
FLASHCARD QUESTION
Front
What is the chemical formula for carbon dioxide?
Back
The chemical formula for carbon dioxide is CO2, which consists of one carbon (C) atom and two oxygen (O) atoms.
Tags
NGSS.MS-PS1-1
7.
FLASHCARD QUESTION
Front
What is the chemical formula for nitrogen gas?
Back
The chemical formula for nitrogen gas is N2, indicating that it is made up of two nitrogen (N) atoms.
Tags
NGSS.MS-PS1-1
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