
Chemical Bonds and Equations
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
A shorter, easier way to show chemical reactions, using symbols instead of words, is called a ____.
Back
chemical equation
2.
FLASHCARD QUESTION
Front
Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the '2' tell you?
Back
There are two bromide ions for every magnesium ion.
3.
FLASHCARD QUESTION
Front
When an atom loses an electron, it becomes a ____.
Back
positive ion
4.
FLASHCARD QUESTION
Front
An ionic bond is the attraction between ____.
Back
oppositely charged ions
5.
FLASHCARD QUESTION
Front
Nitrate (NO3–), ammonium (NH4+), and carbonate (CO3 2–) are examples of __________________ ions.
Back
polyatomic
6.
FLASHCARD QUESTION
Front
What is the charge of a sodium ion (Na+)?
Back
+1
7.
FLASHCARD QUESTION
Front
What type of bond is formed when electrons are shared between atoms?
Back
covalent bond
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