Exploring Matter and Changes

Which of the following best describes the relationship between mass and volume when calculating density?

• Density is the sum of mass and volume.

• Density is the product of mass and volume.

• Density is the difference between mass and volume.

• Density is the ratio of mass to volume.

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DOK Level 2: Skill/Concept

Which of the following is a physical property of matter?

• Flammability

• Reactivity with acid

• Melting point

• Ability to rust

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DOK Level 2: Skill/Concept

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

• Compounds are made of elements, mixtures are not.

• Compounds have a fixed composition, mixtures do not.

• Mixtures are chemically bonded, compounds are not.

• Mixtures have a fixed composition, compounds do not.

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DOK Level 2: Skill/Concept

Which of the following elements is a noble gas?

• Oxygen

• Nitrogen

• Helium

• Hydrogen

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DOK Level 2: Skill/Concept

If a substance changes from a solid to a liquid, what type of change is occurring?

• Chemical change

• Physical change

• Both physical and chemical change

• Neither physical nor chemical change

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DOK Level 2: Skill/Concept

Which of the following is an example of a chemical change?

• Ice melting

• Sugar dissolving in water

• Iron rusting

• Water boiling

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DOK Level 2: Skill/Concept

What is the atomic number of an element determined by?

• The number of protons in its nucleus

• The number of neutrons in its nucleus

• The number of electrons in its outer shell

• The total number of protons and neutrons

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DOK Level 2: Skill/Concept

Which of the following best describes a homogeneous mixture?

• A mixture with visibly different parts

• A mixture with a uniform composition throughout

• A mixture that can be separated by filtration

• A mixture that reacts chemically

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DOK Level 2: Skill/Concept

Which of the following is a chemical property of a substance?

• Color

• Density

• Reactivity with oxygen

• Boiling point

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DOK Level 2: Skill/Concept

What is the formula to calculate the density of an object?

• Density = Mass + Volume

• Density = Mass / Volume

• Density = Mass X Volume

• Density = Volume - Mass

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DOK Level 2: Skill/Concept