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WorksheetsChemistry Unit 1 Lesson1 Graded Classwork
Total questions: 13
Worksheet time: 13mins
Which of these is an intensive property of matter?
mass
volume
density
amount of energy
What is a compound?
any substance, whether it is chemically bonded or not
the smallest unit of matter that maintains its chemical identity
a pure substance made of two or more elements that are chemically bonded
a pure substance that cannot be broken down into simpler, stabler substances
Which process is a chemical change?
boiling
burning
cutting
grinding
What is a mixture?
any substance with a uniform composition
a combination of pure substances bonded chemically
any group of elements that are chemically bonded to one another
a blend of any two or more kinds of matter where each maintains its own unique properties
Which term describes a mixture that is not uniform throughout?
solution
homogeneous
heterogeneous
chemically bonded
A scientist is studying a homogeneous solid with a consistent and ordered arrangement in the lab. Which specialty is the scientist most likely working in?
analytical chemistry
crystallography
geochemistry
theoretical chemistry
Which change is a chemical change of matter?
ice melting to produce water
liquid silica solidifying to form glass
water boiling to produce water vapor
vinegar combining with baking soda to produce carbon dioxide
What does mass measure?
how dense an object is
the volume of an object
the amount of matter in an object
how much space an object occupies
Which statement describes why malleability is a physical property?
It is a physical property because it changes the state of the substance.
It is a physical property because it changes only the substance’s shape.
It is a physical property because it alters only the flammability of the substance.
It is a physical property because it rearranges the substance’s molecules into a new substance.
Which word describes a plan, pattern, representation, or description used to explain a phenomenon?
conclusion
hypothesis
model
theory
In one experiment, magnesium metal is melted. In a second experiment, magnesium metal is burned. The (a) properties of magnesium were unchanged. In the second experiment, a chemical change occurred.
A (a) mixture can be separated by physical means, while a pure substance cannot. For example, salt can be removed from a saltwater mixture by evaporating the water, but separating water into hydrogen and oxygen requires electrolysis, a chemical means.
In a solid, particles are packed together in relatively fixed positions. The particles vibrate about a fixed point. In a (a) , particles are close together but can flow around one another. In a gas, particles are at great distances from one another compared to the particles of liquids and solids.
