Periodic Table
Flashcard
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the charge of an atom with 5 protons, 4 electrons, and 4 neutrons?
Back
Positive
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A process where substances combine or break apart to form new substances, e.g., rusting of iron.
3.
FLASHCARD QUESTION
Front
Which part of an atom has a positive charge?
Back
Proton
4.
FLASHCARD QUESTION
Front
What does it mean for mass to be conserved in a chemical reaction?
Back
The amount of atoms are equal before and after the reaction.
5.
FLASHCARD QUESTION
Front
What is an element?
Back
A pure substance that cannot be broken down into simpler substances by chemical means.
6.
FLASHCARD QUESTION
Front
What is a compound?
Back
A substance formed when two or more elements chemically bond together.
7.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A combination of two or more substances that are not chemically bonded.
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