Building Atoms Worksheet
Explore the fundamental components and structure of atoms, including subatomic particles, isotopes, and ions, for Grade 11 Chemistry.
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Building Atoms: Grade 11 Chemistry
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Read each question carefully and provide your best answer. Show all work where applicable.
1. Which subatomic particle determines the atomic number of an element?
Neutron
Electron
Proton
Photon
2. An isotope of an element has a different number of:
Protons
Electrons
Neutrons
Atomic number
3. The mass number of an atom is the sum of its and .
4. An atom that has gained or lost electrons is called an .
5. All atoms of a given element have the same number of neutrons.
True
False
6. The nucleus of an atom contains protons and neutrons.
True
False
7. Explain the difference between an atom and an ion.
8. Describe the primary role of electrons in chemical bonding.
Match each term on the left with its definition on the right.
9. Proton
a. Negatively charged subatomic particle
10. Electron
b. Subatomic particle with no charge
11. Neutron
c. Positively charged subatomic particle
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