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Questions and Answers
What do protons and electrons in an atom carry?
What do protons and electrons in an atom carry?
- Both protons and electrons are neutrally charged.
- Electrons carry no charge while protons are negatively charged.
- Protons carry a positive charge, and electrons carry a negative charge. (correct)
- Protons carry a neutral charge, and electrons carry a positive charge.
What is the role of neutrons in an atom?
What is the role of neutrons in an atom?
- Neutrons provide a positive charge to the nucleus.
- Neutrons are responsible for the atom's bonding capacity.
- Neutrons determine the color of the element.
- Neutrons carry no electrical charge. (correct)
Where do electrons reside in an atom?
Where do electrons reside in an atom?
- In the nucleus of the atom.
- In spaces called electron shells outside the nucleus. (correct)
- Only in solids, not in liquids or gases.
- Embedded within protons and neutrons.
What is the outcome when bonded atoms have more room to move?
What is the outcome when bonded atoms have more room to move?
Which of the following is not a correct description of an atom?
Which of the following is not a correct description of an atom?
What is true about the arrangement of electrons in an atom?
What is true about the arrangement of electrons in an atom?
What happens when atoms are packed tightly together?
What happens when atoms are packed tightly together?
What is formed when atoms have restricted movement?
What is formed when atoms have restricted movement?
Which of the following elements is mentioned as an example of a pure substance?
Which of the following elements is mentioned as an example of a pure substance?
Flashcards
Atom
Atom
The smallest unit of an element that retains the chemical properties of that element.
Element
Element
A pure substance made up of only one type of atom.
Subatomic Particles
Subatomic Particles
Tiny particles found inside an atom, including protons, neutrons, and electrons.
Proton
Proton
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Electron
Electron
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Neutron
Neutron
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Nucleus
Nucleus
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Electron Shells
Electron Shells
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Atomic Bonding
Atomic Bonding
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Solid
Solid
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Study Notes
Atoms: Building Blocks of Matter
- Atoms are the fundamental units of matter, forming everything in the universe.
- Different types of atoms make up elements (e.g., oxygen, lead, gold).
- A pure substance like gold is made up of billions of gold atoms.
Atomic Structure
- Atoms contain tiny particles: protons, neutrons, and electrons.
- Each element has a unique number of these particles.
- Protons have a positive charge.
- Electrons have a negative charge.
- Neutrons have no charge (neutral).
- Protons and neutrons are located in the atom's nucleus.
- Electrons orbit the nucleus in electron shells.
- Electron shells have specific capacities for electrons.
- The further away from the nucleus, the more electrons a shell can hold.
Atomic Bonding and States of Matter
- Atoms bond together to form various substances.
- Atoms can exist independently or in groups.
- Closely packed atoms form solids (like rocks)—atoms are like being in a very crowded elevator.
- Atoms with more space between them form liquids—imagine moving in an elevator with fewer people.
- Free-moving atoms form gases—imagine a large, empty space (like a lobby) where you and your friends can move freely.
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