Font size
WorksheetsChapter 1 Chemistry in Biology
Total questions: 32
Worksheet time: 19mins
If copper oxide is added to sulfuric acid, copper sulfate and water is made. What are the reactants in this reaction? (more than one answer)
copper oxide
sulfuric acid
copper sulfate
water
If copper oxide is added to sulfuric acid, copper sulfate and water is made. What are the products in this reaction? (more than one answer)
copper oxide
sulfuric acid
copper sulfate
water
If black copper oxide is added to colourless sulfuric acid, blue copper sulfate and colourless water are made and the temperature has increased. How do we know that a chemical reaction has occurred? (may be more than one answer)
the smell stays the same
the temperature changes
the water turns into a gas
the colour changes
Is this equation balanced?
yes
no
maybe
Which of these is the correct balanced equation?
Fe2O3 + 2C ------ 2Fe + 2CO2
2Fe2O3 + 3C ------ 4Fe + 3CO2
Fe2O3 + 3C ------ 2Fe + 3CO2
2Fe2O3 + 2C ------ 2Fe + 2CO2
Which number represents the reaction when an enzyme is used?
1
2
3
4
What kind of reaction does this graph show?
no reaction
activated reaction
endothermic reaction
exothermic reaction
In an exothermic reaction, what will happen to the temperature of the surrounding environment?
it will get hotter
it will get colder
it will stay the same
Which of these statements are correct (more than one answer)
1 = product
4 = active site
3 = active site
2 = reactant
1 = reactant
Which of these statements about enzymes is INCORRECT?
enzymes speed up chemical reactions in organisms
each enzyme is specific to one reactant/s
enzymes are biological catalysts
enzymes are a part of the chemical reaction
Water is ....... (choose all correct answers)
non-polar
cohesive
adhesive
a universal solvent
A polar molecule like water has an unequal distribution of charges, so the regions are oppositely charged.
true
false
Which of these statements about water is NOT true?
solid water is more dense than liquid water
water forms hydrogen bonds with molecules on other surfaces
water molecules are attracted to each other
capillary action is caused by water adhesion
Which of these statements about salt water is true?
salt is the solvent
water is the solution
water is the solute
salt water is the solution
A salad is an example of a heterogenous mixture
true
false
it is both heterogenous and homogenous
Which of these is the type of mixture in which the particles do not settle out e.g. smoke, butter
suspension
colloid
mixture
homogenous
Sand in water is .... (select all that are correct)
suspension
colloid
mixture
heterogenous
Mixtures that react with acids and bases to keep the pH within a certain range are called ...
acids
bases
water
buffers
A solution with more OH- ions than H+ is acidic
true
false
maybe
What would expect the pH of pure water to be?
1
6
7
8
14
What would expect the pH of stomach acid to be closest to?
1
6
7
8
14
How many bonds can a carbon atom form with other atoms?
1
2
3
4
Organic chemistry is the study of which element?
carbon
chlorine
oxygen
nitrogen
What kind of bonds does carbon form?
ionic
metallic
van der Waals
covalent
Which of these has the monomer of fatty acids?
protein
carbohydrate
lipid
nucleic acid
Which of these has saturated and unsaturated types?
protein
carbohydrate
lipid
nucleic acid
Which of these carries genetic information?
protein
carbohydrate
lipid
nucleic acid
Which of these makes up the cell walls of plants and the exoskeleton of insects?
protein
carbohydrate
lipid
nucleic acid
In which monomer would I find a sugar, a phosphate group and a nitrogen base?
amino acid
glucose
fatty acid
nucleotide
Which of these is NOT a lipid?
chitin
cholesterol
triglycerides
hormones
Saturated fats can not bond with any more hydrogen atoms
true
false
maybe
Peptide bonds join which kind of monomers together?
amino acids
glucose
fatty acids
nucleic acids
