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Year 10 - Reactions (Intro, equations conservation of mass)
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the word equation for the reaction of iron and sulfur?
Back
iron + sulfur → iron sulfide
2.
FLASHCARD QUESTION
Front
Is the equation Al + O2 → 2Al2O3 balanced?
Back
No!
3.
FLASHCARD QUESTION
Front
What coefficient is needed to balance the equation N2 + O2 → _ NO?
Back
2
4.
FLASHCARD QUESTION
Front
Atoms combine to form _______.
Back
molecules
5.
FLASHCARD QUESTION
Front
What does the periodic law state about the arrangement of elements?
Back
Elements are arranged according to their atomic numbers so that elements with similar chemical properties are in the same column and properties repeat periodically.
6.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
Mass is neither created nor destroyed in a chemical reaction.
7.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process that involves the rearrangement of the molecular or ionic structure of a substance.
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