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Elements Compounds MixturesChemical Change
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1,2
What is chemically combined in a specific ratio?
A compound is 2 or elements combined in this way. (Hint: there are TWO parts to this)
2,1
What is a metalloid?
A mysterious sample is shiny and it will conduct some
electricity but it is not ductile. This is the category of elements that the sample
would best fit in.
2,2
What is 3?
This is the chemical formula for acetone, OC(CH3)2. This is the number of Carbon atoms in the
formula for acetone.
2,4
What is 2 Nitrogen atoms and 6 Hydrogen atoms?
N2 + 3H2 2NH3
This is the number of and types of atoms in the
reactants of this chemical equation.
3,1
What is Potassium?
I went to the local vitamin store to pick up this
supplement, it is signified with the symbol, K.
3,2
Compounds are chemically combined and mixtures are physically combined
This is the difference between a compound and a mixture.
3,3
What is a colloid?
The particles in this type of mixture are large enough to scatter light but not heavy
enough to settle out.
3,4
What is electrolysis?
This is what it is called when we use electric current to break down a compound.
4,1
What is density?
This characteristic property described as the ratio of a samples mass over volume can be used in determining the identity of an element.
4,4
What are characteristic properties?
Flammability and reactivity are examples of this type of chemical
property that are the same no matter the sample size.
5,1
What is magnetism?
Physical Property Substance 1 Substance 2
Boiling Point 1,310°C 1,004°C
Color Silvery white Silvery White
Other Magnetic Non-magnetic
This is how we can tell that substance 1 and 2 are not the same.