Atom Basics

Flashcard
•
Chemistry
•
5th - 6th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the nucleus of an atom?
Back
The nucleus is the central part of an atom where most of its mass is concentrated. It contains protons and neutrons.
2.
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.
3.
FLASHCARD QUESTION
Front
What particle identifies an element?
Back
The number of protons in the nucleus uniquely identifies an element.
4.
FLASHCARD QUESTION
Front
What are electrons?
Back
Electrons are negatively charged particles that orbit the nucleus of an atom.
5.
FLASHCARD QUESTION
Front
What is the mass of an atom mostly made up of?
Back
Most of the mass in an atom is concentrated in the nucleus.
6.
FLASHCARD QUESTION
Front
What is empty space in an atom?
Back
Empty space in an atom refers to the area around the nucleus where electrons are found, making up most of the atom's volume.
7.
FLASHCARD QUESTION
Front
How many protons does an element with atomic number 3 have?
Back
An element with atomic number 3 has 3 protons.
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