Which of the following is an element?
A) Gold
B) Water
C) Salt
D) Sugar
What type of mixture is salad dressing (oil and vinegar)?
A) Emulsion
B) Solution
C) Alloy
D) Suspension
Which of the following compounds is composed of hydrogen and oxygen?
A) Water
B) Carbon dioxide
C) Sodium chloride
D) Methane
Which term describes a mixture where the composition is uniform throughout?
A) Homogeneous mixture
B) Heterogeneous mixture
C) Compound
D) Element
Which of the following is a compound?
A) Oxygen
B) Helium
C) Sodium chloride
D) Argon
What is the main difference between a compound and a mixture?
A) A compound has a fixed composition; a mixture does not
B) A mixture has a fixed composition; a compound does not
C) A compound can be separated by physical means; a mixture cannot
D) A mixture is a pure substance; a compound is not
Which of the following is an example of a heterogeneous mixture?
A) Salad
B) Salt water
C) Air
D) Vinegar
What is the basic unit of an element?
A) Atom
B) Molecule
C) Compound
D) Mixture
Which of the following is a mixture of metals?
A) Alloy
B) Solution
C) Compound
D) Element
Which of the following substances is an example of a chemical compound?
A) Table salt
B) Air
C) Sand
D) Milk
Which process is used to separate a mixture of sand and salt?
A) Filtration and evaporation
B) Distillation
C) Chromatography
D) Magnetism
Which of the following elements is a metal?
A) Iron
B) Neon
C) Chlorine
D) Sulfur
What type of mixture is air?
A) Homogeneous mixture
B) Heterogeneous mixture
C) Compound
D) Solution
Which of the following is a characteristic of a mixture?
A) The components can be separated by physical means
B) It has a fixed composition
C) It is chemically combined
D) It forms a new substance
Which of the following compounds is made of carbon, hydrogen, and oxygen?
A) Glucose
B) Sodium chloride
C) Iron oxide
D) Ammonia
Which term describes a mixture where the different components can be seen?
A) Heterogeneous mixture
B) Homogeneous mixture
C) Compound
D) Solution
Which of the following is a property of elements?
A) They cannot be broken down into simpler substances
B) They can be separated into simpler substances by physical means
C) They are always mixtures
D) They are always compounds
What type of mixture is a suspension?
A) Heterogeneous
B) Homogeneous
C) Solution
D) Alloy
Which substance is composed of two or more elements chemically combined?
A) Compound
B) Mixture
C) Element
D) Solution
What is an example of a mixture that is separated by chromatography?
A) Ink
B) Salt
C) Gold
D) Sugar
Which of the following is an example of a pure substance?
A) Water
B) Salad
C) Air
D) Gravel
Which of the following is NOT a characteristic of compounds?
A) They have a fixed composition
B) They can be separated by physical means
C) They have unique properties different from their constituent elements
D) They are chemically combined
What type of mixture is chocolate milk?
A) Homogeneous mixture
B) Heterogeneous mixture
C) Compound
D) Solution
Which of the following is an example of a solution?
A) Sugar dissolved in water
B) Salad
C) Sand mixed with gravel
D) Oil and water
What is the term for a substance that is made up of only one type of atom?
A) Element
B) Compound
C) Mixture
D) Solution
Which method is used to separate a liquid mixture into its individual components?
A) Distillation
B) Filtration
C) Magnetism
D) Centrifugation
What type of mixture is milk?
A) Colloid
B) Solution
C) Suspension
D) Alloy
Which of the following is a common property of mixtures?
A) They can be separated by physical methods
B) They always have a fixed ratio of components
C) They are chemically bonded
D) They form a new substance
What is the smallest unit of a compound that retains the properties of that compound?
A) Molecule
B) Atom
C) Mixture
D) Element
Which of the following is NOT a method for separating mixtures?
A) Filtration
B) Distillation
C) Electrolysis
D) Magnetism
Which of the following is an example of a chemical element in its pure form?
A) Helium
B) Carbon dioxide
C) Table salt
D) Alcohol
Which of the following is an example of a compound with a chemical formula?
A) Water
B) Air
C) Soil
D) Sand
Which mixture has particles that are large enough to be seen with the naked eye?
A) Suspension
B) Solution
C) Colloid
D) Alloy
What type of mixture is formed when a solute is dissolved in a solvent?
A) Solution
B) Suspension
C) Colloid
D) Alloy
Which of the following is a method used to separate components of a mixture based on their different boiling points?
A) Distillation
B) Filtration
C) Centrifugation
D) Chromatography
Which of the following substances is a mixture?
A) Air
B) Water
C) Sodium chloride
D) Glucose
Which process can be used to separate a mixture of sand and salt?
A) Dissolving and filtering
B) Distillation
C) Chromatography
D) Electrophoresis
What is a common example of a homogeneous mixture?
A) Saltwater
B) Fruit salad
C) Soil
D) Oil and water
Which of the following mixtures is an example of a colloid?
A) Milk
B) Saltwater
C) Salad
D) Sand
What is the term for a mixture in which one substance is evenly distributed throughout another?
A) Solution
B) Suspension
C) Alloy
D) Compound
Which of the following elements is a noble gas?
A) Neon
B) Oxygen
C) Sodium
D) Iron
What is the term for a substance that is a mixture of different elements and compounds?
A) Alloy
B) Solution
C) Compound
D) Element
Which process would you use to separate a mixture of iron filings and sulfur powder?
A) Magnetism
B) Filtration
C) Distillation
D) Chromatography
What type of mixture is a sand and water mixture before it settles?
A) Suspension
B) Solution
C) Colloid
D) Alloy
Which of the following compounds is used as table salt?
A) Sodium chloride
B) Potassium chloride
C) Calcium carbonate
D) Magnesium sulfate
What is the term for a mixture in which the different components are visibly separate?
A) Heterogeneous mixture
B) Homogeneous mixture
C) Solution
D) Compound
