
Chemistry Midterm Review
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
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.
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of new chemical substances, involving the breaking and forming of bonds.
3.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in the nucleus of an atom.
4.
FLASHCARD QUESTION
Front
What is electronegativity?
Back
Electronegativity is the ability of an atom to attract and hold onto electrons.
5.
FLASHCARD QUESTION
Front
Which element is the most reactive nonmetal?
Back
Fluorine is the most reactive nonmetal.
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
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 a substance formed when two or more different elements are chemically bonded together.
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