Periodic Table
This element is abbreviated as H
What is hydrogen
The formula for density is...
what is mass divided by volume
This is a compound made of 2 hydrogen atoms and one oxygen atom
What is water
The reactivity of a substance would be referred to as this type of property
chemical property
This is an example of a hand tool used to separate a muxture
what is a tweezer, hands or a spoon
This element is abbreviated as Au
Gold
Density of water: 1 g/ml
Density of oil: 0.9 g/ml
Density of pennies: 2.5g/ml
What would be the order of these in a beaker?
oil on top, then water then pennies
An energy drink is an example of a...
mixture
Melting point and boiling point are known as...
physical properties
A good way to separate small solids from a liquid
what is filtration or sieving
This element is abbreviated as K
potassium
Calculate the density for a substance that has a mass of 65 g and a volume of 8.5 ml. Round to the nearest tenth.
7.6 g/ml
This is the reason that you can separate a mixture but not a compound or element..
A mixture is physically combined while a compound is chemically combined
These are characteristics of a substance that can only be observed during a chemical reaction
What is a chemical property
to separate salt from water one would use this method of separation
what is evaporation
This represents how many atoms of each element are in a compound
what is a chemical formula
The substances below that will float on water...
A. 0.9 g/ml
B. 3.2 g/ml
C. 1.5 g/ml
D. 0.5 g/ml
A and D
This is how you know that NaCl is a compound and not an element...
Because it is two elements, (one capital and one lower case letter)
If someone is testing the ph of a substance they are testing this chemical property
what is acidity
This a physical property that could be used to separate iron fillings from sand
what is magnetism
an element made of 2 identical atoms
What is a diatomic element?
Explain why 5ml, 4ml and 8ml of milk would all have the same density
because they are all the same substance, amount does not change density only state of matter
This compound has a chemical formula of C6H12O6
What is glucose
Viscosity is property of matter. Viscosity describes a fluid’s resistance to flow. Syrup and honey do not flow very fast when compared to water, so they are more viscous. Is viscosity a physical or a chemical property? Explain your answer.
answers to vary
This is a laboratory technique for the separation of a mixture into its components. colors appear on paper in this method (hint: think back to the video)
what is chromatography