Physical/Chemical Properties and pH by Monica Weaver https://padlet.com/msweaver20/bbma75sbg79l Please copy down the following standards and notes in your ISN en-us 2016-11-24 05:38:09 UTC 2025-11-17 00:59:30 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Balance.png Physical Properties msweaver20 https://padlet.com/msweaver20/bbma75sbg79l/wish/139693841 Physical properties of metals are
● Luster—Having a shiny surface or reflecting light brightly
● Conductors—Heat and electricity move through them easily
● Malleable—Ability to be hammered into different shapes
● Ductile—Ability to be drawn into a wire
● High density—Heavy for their size

Physical properties of nonmetals are
● Dull—Not shiny
● Nonconductors—Heat and electricity do not move through them easily
● Brittle—Break or shatter easily (solids)

(write this at the top of the page with the index pocket)
Physical properties can be observed and measured without changing the kind of matter being studied. The following physical properties can be used to help identify a substance:

Melting Point
● The temperature at which a solid can change to a liquid
● Unchanging under constant conditions
● Example: Ice melts to form liquid water at 0oC (32oF).

Boiling Point
● The temperature at which a liquid changes from a liquid to a gas.
● Boiling begins when bubbles form throughout, grow larger, rise to the surface, and burst.
● As long as the substance is boiling the temperature of the liquid remains constant (at the boiling point).
● Boiling point is unchanging under constant conditions for a given substance.
● Example: The boiling point for pure water at sea level is 100 degrees Celsius ( 212 degrees Fahrenheit).

Density
● The relationship between the mass of a material and its volume 
● Substances that are denser contain more matter in a given volume.
● The density of a substance is unchanging no matter how large or small the sample of the substance.
● Example:
  • Lead is a very heavy, dense metal. The density of lead is much greater than the density of the very light metal, aluminum.
  • Generally, metals have a heavier density than nonmetals.

Conductivity
● The ability to act as an electrical conductor or an electrical insulator is based on the solid’s ability to complete an electric circuit, i.e., conduct electricity.
● Materials with high conductivity are called electrical conductors because they allow current to flow easily.
● Materials with low conductivity are called electrical insulators (nonconductors) because they do not allow current to flow.
● Example: Most metals are electrical conductors while nonmetals are electrical insulators.

Color
● Color can be used to help identify a substance, along with other properties.
● By itself, color is not a significant identifier of a substance.
● Absence of color is also a physical property.

Hardness
● The relative resistance of a metal or other material to denting, scratching, or bending.

Magnetism
● The property of reacting to the forces exerted by magnets
]]> 2016-11-24 05:38:09 UTC https://padlet.com/msweaver20/bbma75sbg79l/wish/139693841 pH indicators - COPY IN ISN msweaver20 https://padlet.com/msweaver20/bbma75sbg79l/wish/139693844 Litmus Papers
  • Has a special dye on it that changes colors in the presence of an acid or base.
  • Blue litmus paper turns red in an acid, and stays blue in a base.
  • Red litmus paper turns blue in a base, and stays red in an acid.
Phenolphthalein
  • Is used to test for the presence of a base.
  • It is a colorless chemical that turns magenta (bright pink) in a base, and stays colorless in neutral or acidic solutions.
pH Paper
  • Has a range of colors depending on the pH of the solution.
  • The color of the paper is compared to the chart on the vial to determine the pH.
]]> 2016-11-24 05:38:09 UTC https://padlet.com/msweaver20/bbma75sbg79l/wish/139693844 pH - COPY IN ISN msweaver20 https://padlet.com/msweaver20/bbma75sbg79l/wish/139693846 a measure of hydrogen ion concentration OR the acidity or alkalinity of a solution on a scale from 0 (acidic) to 14 (basic or alkaline).]]> 2016-11-24 05:38:09 UTC https://padlet.com/msweaver20/bbma75sbg79l/wish/139693846 Chemical Properties msweaver20 https://padlet.com/msweaver20/bbma75sbg79l/wish/139693848 Ability to burn
The ability to burn involves a substance reacting quickly with oxygen to produce light and heat. This process is called burning.
Ability to rust
The ability of a substance to rust is a chemical property that involves a substance reacting slowly with oxygen. This process is called rusting.]]> 2016-11-24 05:38:09 UTC https://padlet.com/msweaver20/bbma75sbg79l/wish/139693848 STANDARDS msweaver20 https://padlet.com/msweaver20/bbma75sbg79l/wish/139693851
  • 7.P.2B.1 Analyze and interpret data to describe substances using physical properties and chemical properties.
  • 7.P.2B.3 Analyze and interpret data to compare the physical properties, chemical properties, and pH of various solutions and classify solutions as acids or bases.
    • ]]>     2016-11-24 05:38:09 UTC https://padlet.com/msweaver20/bbma75sbg79l/wish/139693851