What are hydrogen bonds?
Basic Chem. for Bio Students!

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Biology
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Weak attractions between water molecules that cause them to cling together.
2.
FLASHCARD QUESTION
Front
How many protons are in a potassium atom?
Back
19 protons.
3.
FLASHCARD QUESTION
Front
What is a neutron?
Back
A subatomic particle found within the nucleus, has a neutral charge, and a mass of 1.
4.
FLASHCARD QUESTION
Front
How many neutrons are in a potassium atom?
Back
20 neutrons.
5.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A combination of two or more atoms held together by chemical bonds.
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The number of protons in the nucleus of an atom, which defines the element.
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 made of two or more different types of atoms chemically bonded together.
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