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WorksheetsChemistry part 2 Practice
Total questions: 30
Worksheet time: 31mins
Al2O3
ionic
covalent
A ______________ mixture is one that does not have a uniform composition.
heterogeneous
homogenous
pure substance
Dry ice is solid carbon dioxide, or CO2. Dry ice may be used as a cooling agent and contains two oxygen atoms bonded to a carbon atom. Dry ice is a ___________________ .
pure substance
mixture
Instant coffee is made by dissolving a powder in hot water. Instant coffee is a ___________________ .
pure substance
mixture
Blood is a fluid found in the bodies of humans and other animals. It can be physically separated into plasma, red blood cells and white blood cells. Blood is a ___________________
pure substance
mixture
Put the liquids in order from most dense to least dense?
4,3,2,1
1,2,3,4
3,4,2,1
4,3,1,2
What causes an object to sink in a water?
if the object's density is less than the water's density.
if the object's density is the same as water's density.
if the object's density is greater than water's density.
if the object's density is zero
Calculate the density of the cube.
2 g/cm3
4 g/cm3
6 g/cm3
8 g/cm3
What is the mass of a piece of stainless steal with a density 3.0g/cm3 and a volume of 83.3 cm3
250 g
175 g
301 cm3
Why are unbalanced chemical equations wrong?
Because they make compounds.
Because they don't have reactants and products.
Because they have the same number of atoms on both sides of the equation.
Because they violate the law of conservation of mass.
Which Chemical Equation is Balanced?
Fe4+O2------4FeO2+O2
2H2+O2-----2H2O
3Cr+4O₂-----2Cr₂O₃
Which Chemical Equation is Balanced?
4O2 + 2H2 + S2------ 2H2SO4
4H2+O2-----2H2O2
3Cr+4O₂-----2Cr₂O₃
PCl5 + 2H2O → H3PO4 + HCl
Balanced
Not Balanced
What type of bonding does this picture show?
Ionic
Covalent
What type of bonding does this picture show?
Ionic
Covalent
