
Atomic Theory and Periodic Trends
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the main components of atomic theory?
Back
The main components of atomic theory include the idea that matter is made up of atoms, atoms are indivisible and indestructible, atoms of a given element are identical in mass and properties, and chemical reactions involve the rearrangement of atoms.
2.
FLASHCARD QUESTION
Front
What is the significance of atomic mass in an element?
Back
Atomic mass indicates the total number of protons and neutrons in an atom's nucleus, which helps determine the element's identity and its isotopes.
3.
FLASHCARD QUESTION
Front
What properties are common to metals?
Back
Metals are typically good conductors of heat and electricity, malleable, ductile, and have a shiny appearance.
4.
FLASHCARD QUESTION
Front
What distinguishes metals from non-metals?
Back
Metals are usually solid at room temperature (except mercury), have high melting points, and conduct heat and electricity well, while non-metals can be gases or solids, have lower melting points, and are poor conductors.
5.
FLASHCARD QUESTION
Front
What are the three main types of subatomic particles?
Back
The three main types of subatomic particles are electrons (negatively charged), protons (positively charged), and neutrons (neutral).
6.
FLASHCARD QUESTION
Front
How do families (groups) in the periodic table relate to element properties?
Back
Elements in the same family or group of the periodic table have similar chemical properties due to having the same number of valence electrons.
7.
FLASHCARD QUESTION
Front
What is the periodic trend for atomic radius?
Back
Atomic radius generally increases down a group due to the addition of electron shells and decreases across a period from left to right due to increased nuclear charge.
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