PS.8.1.1 - Classifying Matter

Which of the following is a characteristic property of elements?

• They can be broken down into simpler substances by chemical means.

• They consist of only one type of atom.

• They are always found in a gaseous state.

• They are composed of two or more different atoms.

What type of bond is formed when atoms share electrons?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which of the following is an example of a compound?

Tags

NGSS.MS-PS1-1

Which of the following best describes a mixture?

• A substance made of two or more elements chemically combined.

• A substance that cannot be separated into simpler substances.

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

• A pure substance with a fixed composition.

What is the main difference between a compound and a mixture?

• Compounds can be separated by physical means, mixtures cannot.

• Mixtures have a fixed composition, compounds do not.

• Compounds are chemically bonded, mixtures are not.

• Mixtures are pure substances, compounds are not.

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

• Sand and water

• Oil and water

• Salt dissolved in water

• Salad

Which of the following is an example of an element?

What type of mixture is a salad?

• Homogeneous mixture

• Heterogeneous mixture

• Compound

• Element

How are atoms arranged in a compound?

• Randomly mixed without any specific pattern.

• In a fixed ratio and specific arrangement.

• As individual atoms not bonded together.

• In a gaseous state only.

Tags

NGSS.MS-PS1-1

Which of the following substances is a mixture?

• Pure water

• Table salt

• Air

• Carbon dioxide