Test 1 Review Flashcard

2.6 X 3.78
9.8
10g to oz.
.35274
10m/s to miles/p/h
.016m/p/h
Find the density of an object if the mass is 16g and the volume is 8 cubic centimeters.
D=2g/cubic centimeter
12 inches squared to centimeters squared
30.48 centimeters squared
Whats a pure substance?
a chemical substance is a material with a specific chemical composition.
give and example of an element
Oxygene, Hydrogen, Helium, Neon, Mercury and Magnesium.
Whats the difference between a compund and a mixture?
A mixture you can always get the two or more substances back to there original state, in a compound the elements can not be seperated.
What is a heterogeneous mixture?
A mixture with different elements involved.
What is a homogenous mixture?
A mixture involving the same type of element.
What are some characteristics of a pure substance?
They can not be seperated, they are in the simplist for they can be in.
What are examples of chemical properties? What are examples of physical properties?

Chemical- the ability to burn

Physical- The ability to change state.

Give an example of a chemical change.
Wood Burning
Give an example of a physical change
water turning to water vapor.
What are the three objects in an Atom?
protons, neutrons, and electrons
what does AMU stand for?
Atomic Mass Unit
Refer to marbellium lab for Isotopic abundance
What is an isotope?
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element
Refer to the area of aluminum foil lab
Whats an example of a mixture?
supermarket salt
whats an example of an isotope?
Carbon-12
know the electromagnetic spectrum and how the spectrum moves from high to low energy

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