2024 - Fall Final Exam Modified Review
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an anion?
Back
An anion is a negatively charged ion formed by gaining electrons.
2.
FLASHCARD QUESTION
Front
What types of atoms make a covalent bond?
Back
A covalent bond is formed between two nonmetals.
3.
FLASHCARD QUESTION
Front
How many covalent bonds does H2O have?
Back
H2O has 2 covalent bonds.
4.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture that has a uniform composition throughout, such as coffee or hydrogen peroxide.
5.
FLASHCARD QUESTION
Front
What is a heterogeneous mixture?
Back
A heterogeneous mixture is a mixture that does not have a uniform composition, such as trail mix.
6.
FLASHCARD QUESTION
Front
What is the difference between ionic and covalent bonds?
Back
Ionic bonds involve the transfer of electrons between a metal and a nonmetal, while covalent bonds involve the sharing of electrons between two nonmetals.
7.
FLASHCARD QUESTION
Front
What is the molecular formula for water?
Back
The molecular formula for water is H2O.
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