PS Unit 6 Study Guide

Which property describes the ability of a substance to ignite and burn?

• Solubility

• Flammability

• Magnetism

• Hardness

Answer explanation

Flammability is the property that describes a substance's ability to ignite and burn. It is distinct from solubility, magnetism, and hardness, which refer to other physical or chemical characteristics.

Which property measures how easily a substance dissolves in water?

• Solubility

• Reactivity

• Thermal conductivity

• Melting point

Answer explanation

Solubility measures how easily a substance dissolves in water. It indicates the extent to which a solute can mix with a solvent, making it the correct choice for this question.

Which term describes “the amount of matter in an object”?

• Density

• Mass

• Volume

• Weight

Answer explanation

The term that describes 'the amount of matter in an object' is mass. Mass is a measure of the quantity of matter, while density refers to mass per unit volume, and weight is the force due to gravity on an object.

Which term means the temperature at which a solid becomes a liquid?

• Boiling point

• Melting point

• Thermal conductivity

• Reactivity

Answer explanation

The term 'melting point' refers to the specific temperature at which a solid transitions into a liquid. In contrast, 'boiling point' is when a liquid becomes a gas, while 'thermal conductivity' and 'reactivity' relate to different properties.

Which is a chemical property?

• Density

• Volume

• Reactivity with acid

• Color

Answer explanation

Reactivity with acid is a chemical property because it describes how a substance interacts with acids, leading to a chemical change. In contrast, density, volume, and color are physical properties.

Which is an extrinsic property?

• Mass

• Density

• Melting Point

• Color

Answer explanation

Mass is an extrinsic property because it depends on the amount of matter in an object, while density, melting point, and color are intrinsic properties that do not change regardless of the object's size or shape.

Which is an intrinsic property?

• Volume

• Mass

• Density

• Weight

Answer explanation

Density is an intrinsic property because it depends only on the material's composition, not on the amount of substance. In contrast, volume, mass, and weight can change with the quantity of material.

Which term means a limitation or restriction when solving a design problem?

• Intrinsic property

• Constraint

• Reactivity

• Phase change

Answer explanation

In design problem-solving, a 'constraint' refers to a limitation or restriction that must be considered. It defines the boundaries within which a solution must be developed, making 'constraint' the correct term for this context.

Tags

NGSS.MS-ETS1-1

Which property describes how a material behaves in a magnetic field?

• Solubility

• Magnetism

• Electrical conductivity

• Hardness

Answer explanation

The property that describes how a material behaves in a magnetic field is magnetism. It indicates whether a material is attracted to or repelled by a magnetic field, making it the correct choice.

Tags

NGSS.MS-PS2-3

Which property changes when a material’s magnetism shifts with temperature?

• Thermal conductivity

• Thermal magnetism

• Flammability

• Elasticity

Answer explanation

When a material's magnetism shifts with temperature, it is referred to as thermal magnetism. This property directly relates to how temperature affects magnetic behavior, making it the correct choice.

Tags

NGSS.MS-PS2-3