Physical Properties
What are some examples of physical properties?
Mass, Volume, shape, size, color, hardness etc.
What happens when observing a chemical property?
A new substance is formed (chemically changes)
what is density?
the compactness or consistency of a material.
Matter can neither be ...
created or destroyed during a chemical change.
How to find the volume of a cylinder?
Volume = pi x r2 x h
Melting point is...
The temperature when a solid becomes a liquid.
What is 1 of the top 5 most combustible materials?
1.) Paper
2.) Straw
3.) Wood
4.) Cloth
5.) Coal / Charcoal
Does density change regardless of size?
No
Mass cannot be ...
Lost during a chemical change.
Mass is measured in what using a scale?
grams (g)
Boiling point is...
The temperature when a liquid becomes a gas.
Reactivity is ...
How easily a substance reacts to an acid or base.
how do you find the density of a rectangular prism?
Volume = L x W x H
What is constant during chemical or physical changes?
The total of mass.
what is the formula of combustibility?
Hydrocarbon + Oxygen
Heat and Light + Water + Carbon Dioxide
or
CxHy + O2
Heat and light + H2O + CO2
What is an example of high viscosity?
Syrup, Honey, Ketchup, Toothpaste etc.
What happens to atoms during a chemical reaction?
They rearrange to form different substances.
volume of a solid is measured in __
volume of a liquid is measured in __
Cm3
mL
What is a piece if evidence of chemical change?
Release of light
Temperature change
Odor change
Sudden color change
Gas given off
Sudden appearance of a solid (called a
precipitate)
How can viscosity change?
With temperature
What is a solute, solvent and solution?
Solute = what is being dissolved
solvent = what is doing the dissolving
Solution = the result after it dissolves
Give and example of oxidation ?
Iron reacts with oxygen and moisture and creates rust. (the formation of rust)
what are the 5 steps to finding volume using water displacement?
1.) put enough water into a graduated cylinder to cover the object.
2.) record the initial volume.
3.) add the object.
4.) record the final volume.
5.) subtract Vf - Vi to find the volume of the object.
An example of physical change?
melting ice into water
boiling water into steam
cutting paper into pieces
dissolving sugar in water
What tool do you use to find the volume of a liquid or an irregularly shaped solid?
a graduated cylinder