Chapter 10 & 11 Unit Test
Flashcard
•
Chemistry
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the nucleus of an atom?
Back
The nucleus is the central part of an atom, containing protons and neutrons, but not electrons.
2.
FLASHCARD QUESTION
Front
What is the symbol for Hydrogen?
Back
H
3.
FLASHCARD QUESTION
Front
What type of elements are most commonly found on the Periodic Table?
Back
Most elements on the Periodic Table are metals.
4.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.
5.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of new chemical substances.
6.
FLASHCARD QUESTION
Front
What is the Plum Pudding Model?
Back
The Plum Pudding Model is an early 20th-century model of the atom that proposed that electrons are embedded in a positively charged 'soup'.
7.
FLASHCARD QUESTION
Front
What is the Planetary Model of the atom?
Back
The Planetary Model describes the atom as having a nucleus surrounded by electrons that orbit in fixed paths, similar to planets around the sun.
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