Science

Lesson 2 properties of matter

Melting point

The temperature where a substance goes from a solid to a liquid

Boiling point

the temperature where liquid boils at a given pressure

Physical property

Can be observed or measured without changing the identity of a substance

What are some examples of physical properties

Color, Density, melting point, boiling point, mass, volume

What is mass (review

The amount of matter in an object

What is volume (review

The amount of space an object takes up

What property is melting and boiling point

Physical property (They can help identify a substance

Solubility

describes how much of a substance can dissolve in a particular solvent under given conditions (a way to remember, Solvent>substance>Solubility

Conductivity

describes a material’s ability to transfer electricity or thermal energy (A way to remember, Conduct electricity> Conductivity

Magnetism

describes magnetic behavior, such as attraction to a magnet (A way to remember, Magnet>Magnetism

Malleabiltiy

is the ability to be hammered or rolled into thin sheets (A way to remember, a mallet is a type of hammer> Malleability

Ductility

is the ability to be drawn into wire. Copper wire is an example

Viscosity

is a liquid’s resistance to flowing. Honey has a higher viscosity than water (Physical property

physical change

changes a material’s size, shape, or state without changing its chemical identity

What are examples of a physical change

cutting paper, crushing a can, melting ice, and boiling water

Distillation

separates

substances using differences in how easily they vaporize

Filtration

separates an insoluble solid from a liquid using a filter

Decanting

separates materials by carefully pouring off a liquid after a solid settles

Evaporation

can recover a dissolved solid from a solution

Chromatography

separates substances because they move differently through a material with a solvent

Magnetic separation

uses differences in attraction to a magnet

chemical property

describes a substance’s ability to undergo a change that forms new substances

Flammability

ability to burn

Reactivity

describes a substance’s tendency to react with other substances

chemical change forms….

one or more new substances

Electrolysis

uses electrical energy to drive a chemical reaction