Multiple Choice
In the classification of matter, what is the smallest unit of a compound that still retains the chemical properties of that compound?
1
views
3. Matter and Energy
Classification of Matter
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
A compound differs from a mixture because it:
A
can have any composition and can always be separated into its components by physical methods
B
consists of a single type of atom and cannot be decomposed by chemical reactions
C
has a fixed composition with elements chemically bonded and can be separated only by chemical methods
D
is always homogeneous, whereas mixtures are always heterogeneous
Verified step by step guidance1
Understand the definitions of compounds and mixtures: A compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio, while a mixture consists of two or more substances physically combined without fixed proportions.
Recognize that compounds have a fixed composition, meaning the ratio of elements is constant throughout the substance, whereas mixtures can vary in composition.
Note that compounds can only be separated into their constituent elements or simpler compounds by chemical methods (such as chemical reactions), not by physical methods like filtration or distillation.
Understand that mixtures can be separated by physical methods because their components retain their individual properties and are not chemically bonded.
Conclude that the key difference is that compounds have elements chemically bonded with fixed composition and require chemical methods for separation, while mixtures have variable composition and can be separated by physical methods.
1:34mWatch next
Master Classification of Matter 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