Structure of an atom

Flashcard
•
Science
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Big Bang Theory?
Back
The Big Bang Theory states that all of the matter in the Universe exploded from a tiny, dense point called a singularity.
2.
FLASHCARD QUESTION
Front
How are elements in the Periodic Table arranged?
Back
Elements in the Periodic Table are arranged in order of increasing atomic number.
3.
FLASHCARD QUESTION
Front
How old is the universe?
Back
The universe is approximately 13.8 billion years old.
4.
FLASHCARD QUESTION
Front
What confirmed our theory of the universe?
Back
The discovery of cosmic microwave background radiation confirmed our theory of the universe.
5.
FLASHCARD QUESTION
Front
What do elements in the same group have in common?
Back
Elements in the same group have similar properties.
6.
FLASHCARD QUESTION
Front
What is an atom?
Back
An atom is the basic unit of a chemical element, consisting of a nucleus surrounded by electrons.
7.
FLASHCARD QUESTION
Front
What are protons?
Back
Protons are positively charged particles found in the nucleus of an atom.
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