Physical & Chemical Properties and Changes

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1.6 g/mL

What is the density of a liquid with a mass of 200g and a volume of 125mL?

Color

a change in this indicates a chemical change; by itself this is not a significant identifier of a substance

physical property

a diamond's hardness

mixture

all components keep their original properties

physical property

aluminum's high melting point

reactivity

an example of chemical property describing the ability of a substance to combine chemically

Chemical Properties of Matter Examples

Ability to Burn; Ability to Rust

centrifugation

method of separating a mixture based on density

evaporation

method of separating a mixture of a solid and water

chemical change

How can a chemical change be reversed?

Physical Properties of Matter Examples

Melting Point; Boiling Point; Density; Color, Conductivity, Ductile, Malleable

density= mass/volume

calculation of density from known mass and volume

mass = density x volume

calculation of mass from known density and volume

volume = mass/density

calculation of volume from known mass and density

Physical Property

can be observed and measured without changing the identity of the substance

Chemical Property

can be observed when substances react (combine) with another substance; as a result it becomes a new substance

Ability to react with acid

chemical property; describes how a substance reacts when exposed to an acid

Ability to Rust

chemical property; involves a substance (iron) reacting slowly with oxygen

Ability to Burn

chemical property; involves a substance reacting with oxygen quickly to produce light and heat

signs of chemical change

color change, odor change, gas production, heat production

Odor

how a substance affects the olfactory (smell) receptors; a change in this indicates a chemical change

lighter than air

physical property of helium which makes it a good choice for balloons

Ductile

physical property; ability to be drawn out into a wire

Malleable

physical property; ability to be flattened or spread out

Conductivity

physical property; ability to conduct heat or electricity

Solubility

physical property; describes how easily a substance dissolves when mixed with another substance

Magnetism

physical property; describes the attraction of a substance to a magnetic field.

Buoyancy

physical property; describes the tendency of a substance to float in water or another fluid.

Texture

physical property; how the surface of a substance feels

filtration

separation of a mixture by a filter

distillation

separation of a mixture by boiling and condensation

Boiling Point

temperature and pressure at which a substance changes from a liquid to a gas

Melting Point

temperature and pressure at which a substance changes from a solid to a liquid

Density

the relationship between the mass of a material and its volume; D=m/v

element

types of matter represented by the periodic table; pure substance


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