WorksheetsElements, Compounds, and Mixtures: A Pre-Test on Matter
Total questions: 18
Worksheet time: 18mins
What is the smallest unit of an element that maintains the properties of that element?
Compound
Molecule
Atom
Mixture
Which of the following is a compound?
Oxygen (O 2 )
Water (H 2 O)
Neon (Ne)
Air
What distinguishes a mixture from a compound?
Mixtures can only be separated by chemical means.
Compounds have properties different from their component elements, while mixtures retain the properties of their components.
Mixtures are always solid.
Compounds are made of only one type of atom.
Which state of matter has a definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
In which state of matter are particles packed tightly together in a fixed position?
Solid
Liquid
Gas
Plasma
What is the process called when a liquid changes into a gas?
Freezing
Melting
Evaporation
Condensation
Which of the following is NOT a mixture?
Salt water
Air
Carbon Dioxide (CO 2 )
Salad
What is the main difference between a homogeneous mixture and a heterogeneous mixture?
Homogeneous mixtures are always liquids, while heterogeneous mixtures are always solids.
Homogeneous mixtures have components that are uniformly distributed, while heterogeneous mixtures do not.
Heterogeneous mixtures can only be separated by physical means.
Homogeneous mixtures cannot be separated into their components.
Which of the following is an example of a chemical change?
Dissolving salt in water
Boiling water
Rusting of iron
Melting of ice
What is the term used to describe a substance made of two or more elements that are chemically combined in a fixed ratio?
Mixture
Solution
Compound
Suspension
Which of the following is a physical change?
Burning wood
Cooking an egg
Dissolving sugar in water
Tarnishing of silver
What happens to the particles of a substance as it changes from a solid to a liquid?
The particles move closer together.
The particles move farther apart.
The particles stop moving.
The particles change their chemical properties.
Which of the following elements is a liquid at room temperature?
Mercury (Hg)
Gold (Au)
Iron (Fe)
Oxygen (O)
What is the term for a mixture in which the solute is uniformly distributed within the solvent?
Suspension
Solution
Colloid
Emulsion
Which of the following processes involves a solid changing directly into a gas?
Condensation
Sublimation
Deposition
Evaporation
What is the process called when a gas changes into a liquid?
Freezing
Melting
Evaporation
Condensation
Which state of matter has neither a definite volume nor a definite shape?
Solid
Liquid
Gas
Plasma
What happens to the particles of a substance as it changes from a liquid to a gas?
The particles move closer together.
The particles move farther apart.
The particles stop moving.
The particles change their chemical properties.
