WorksheetsUnit 1 review ch's 1-2
Total questions: 30
Worksheet time: 23mins
Which of the following is a covalent compound? ?
MgO
C2H6
SrCl
NaCl
Ionic bonds occur between what type of elements?
Metals and nonmetals
Metals and metals
nonmetals and nonmetals
there are no ionic bonds
What type of bonds occur between a positively charged hydrogen and a negatively charged molecule?
ionic bonds
covalent bonds
peptide bonds
hydrogen bonds
What type of bonds occur when atoms share electrons?
ionic bonds
covalent bonds
hydrogen bonds
Van Der Waal bonds
Which of these is the correct stick diagram for CH4?
A researcher measures the temperature of a solution as it is heated, is this an example of taking quantitative or qualitative data?
qualitative data
quantitative data
regular data
special data
If a cooking oil is liquid at room temperature, then is it saturated or unsaturated?
saturated
unsaturated
Which is a monosaccharide?
The two parts of a lipid are the glycerol and the
carbons
monoscaccharides
fatty acid chains
nucleotides
Which has more stored energy?
monosaccharide
disaccharide
amino acids
unsaturated fats
What are proteins made of?
fatty acid chains
carbon ring structures
amino acids
enzymes
Glucose test strips test for which material?
monosaccharides
polysaccharides
protein
lipids
Iodine is placed in a sample and turns black. What material is present in the sample?
monosaccharides
polysaccharides
protein
lipids
a glucose test strip is dipped in an unknown liquid solution. The strip turns dark green. What does this mean?
there is glucose present
there is starch present
there is protein present
there are lipids present
Iodine is placed into a sample and turns the sample super dark purple. What does this mean?
there is glucose present
there is starch present
there is protein present
there are lipids present
If biuret turns blue in a sample, does this indicate the presence of a monosaccharide, polysaccharide, protein or a lipid?
there is glucose present
there is starch present
there is protein present
there are lipids present
If a paper bag turns translucent when a sample is placed on it, does this indicate the presence of a monosaccharide, polysaccharide, protein or a lipid?
there is glucose present
there is starch present
there is protein present
there are lipids present
What makes amino acids different from each other?
the R groups
the amino groups
the carboxyl groups
they are not different
Surface tension in water is a strong bond due to what type of bonding?
covalent bonds
ionic bonds
hydrogen bonds
this is a conspiracy
Why do animals need protein?
energy
fast energy
energy storage
make more proteins and muscle
Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Which property of water accounts for this?
high heat specificity
cohesion and adhesion
surface tension
exellent solvent
less dense when solid
Water is often called the “universal solvent.” What property of water allows it to dissolve so many other substances?
high heat specificity
cohesion and adhesion
surface tension
polarity
less dense when solid
Which is an example of a non-living material
fire
skin cells
hair
bacteria
Which of the following is the reason scientists have to have their work peer reviewed?
they don't
check for mistakes, biases
limit new ideas
so they can become famous
What does it mean for a scientist to be skeptical?
willing to ask questions and require evidence
not willing to listen
accept any idea
just trust everyone
Is a mushroom growing from the ground living, non-living or once living?
living
non-living
once living
freaky stuff here
Which of the following is an ionic compound?
LiCl
C2H8
HCN
C6H12O6
Which of the following is the range on a pH scale for acids?
0-6
7
8-14
Which of the following is the range on a pH scale for neutral?
0-6
7
8-14
How many protons does nitrogen have?
6
7
8
10
