
2024 Honors Chemistry Final Exam
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a process where one or more substances are transformed into different substances with distinct properties, often involving a reaction that produces heat, light, or gas.
2.
FLASHCARD QUESTION
Front
What happens to paper when it is burned?
Back
Burning paper is a chemical change that transforms it into ash, carbon dioxide, and water vapor.
3.
FLASHCARD QUESTION
Front
What are alkali metals?
Back
Alkali metals are elements in Group 1 of the periodic table, characterized by their high reactivity, especially with water, and the presence of one valence electron.
4.
FLASHCARD QUESTION
Front
What is the reactivity trend of alkali metals?
Back
Alkali metals become more reactive as you move down the group in the periodic table.
5.
FLASHCARD QUESTION
Front
What defines elements in the same group of the periodic table?
Back
Elements in the same group have similar chemical properties and the same number of valence electrons.
6.
FLASHCARD QUESTION
Front
What is the significance of valence electrons?
Back
Valence electrons determine how an atom can bond with other atoms and are crucial for understanding chemical reactivity.
7.
FLASHCARD QUESTION
Front
What occurs when an atom loses valence electrons?
Back
When an atom loses valence electrons, it becomes a positive ion (cation) due to the loss of negative charge.
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