Classifying Matter

Multiple Choice

Which of the following best describes a mixture?

• A substance made of only one type of atom

• A combination of two or more substances that retain their individual properties

• A substance in which atoms are chemically bonded together

• A substance that cannot be separated by physical means, only by chemical processess

Multiple Select

Which of the following are examples of substances?

• Aluminum

• Oxygen

• Water

• Sugar

Multiple Choice

Which of the following best describes a compound?

• A substance made of only one type of atom, which must be the exact same element.

• A substance made of two or more elements chemically bonded together

• A mixture of substances physically blended together

• A substance that dissolves in a solvent

Multiple Choice

Which of the following is NOT considered matter?

• Air

• Sound

• Water

• Sugar

Multiple Select

Which of the following statements are true about atoms?

• All atoms have the same number of protons, neutrons, and electrons.

• Atoms determine the properties of matter.

• Atoms are the building blocks of matter.

• Different arrangements of atoms make up different types of matter.

Multiple Choice

Which of the following best explains why water (H2O) is considered a compound?

• It contains only hydrogen atoms.

• It contains only oxygen atoms in a gas state.

• It contains hydrogen and oxygen atoms chemically bonded together in a certain ratio.

• It is made up of molecules that are not bonded together chemically but are stuck together physically.

Multiple Choice

Which statement best describes the difference between an element and a compound?

• An element contains only one type of atom, while a compound contains atoms of two or more elements chemically bonded together.

• An element contains atoms of different types, while a compound contains only one type of atom.

• Both elements and compounds contain only one type of atom. The difference is in how they are arranged.

• A compound contains atoms that are not bonded together.

Multiple Choice

Which statement best describes a mixture?

• A mixture is made of combinations of two or more substances that are physically blended together.

• A mixture is made of a single element.

• A mixture is made of compounds that are chemically bonded.

• A mixture contains only one substance.

Multiple Choice

Which of the following is an example of a homogeneous mixture?

• Steel

• Soil

• Cereal in milk

• Oil and vinegar

Multiple Choice

What are the main differences between atoms, elements, and compounds?

• Atoms are the smallest units of matter, elements are pure substances made of one type of atom, and compounds are substances made of two or more different atoms chemically combined.

• Atoms are always found in compounds, elements are mixtures, and compounds are pure substances.

• Atoms and elements are the same, while compounds are mixtures of elements.

• Atoms are pure substances, elements are mixtures, and compounds are always gases.