Multiple Choice
Which of the following substances is classified as a mixture?
34
views
1. Intro to General Chemistry
Classification of Matter
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following statements about air is correct?
A
Air is matter because it has mass and occupies space.
B
Air is not matter because it is invisible.
C
Air is a pure substance.
D
Air is energy, not matter.
Verified step by step guidance1
Recall the definition of matter: Matter is anything that has mass and occupies space.
Consider air: Although it is invisible, air has mass and takes up space, which means it fits the definition of matter.
Evaluate the other options: Air is not a pure substance because it is a mixture of gases (mainly nitrogen, oxygen, and small amounts of other gases).
Understand that air is not energy; energy is a property or ability to do work, while air is a physical substance.
Conclude that the correct statement is that air is matter because it has mass and occupies space.
1:44mWatch next
Master Introduction to General Chemistry Course with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Classification of Matter practice set
Problem sets built by lead tutorsExpert video explanations