Worksheetsreview: 2nd qtr exam mc
Total questions: 20
Worksheet time: 10mins
Which of the following defines matter correctly?
Anything that is rigid and solid.
Anything that possesses energy.
Anything that occupies space and living.
Anything that occupies space and has mass.
Which statement is TRUE?
Tap water is a pure substance.
Metals are considered good insulators.
Compounds are mixtures consist of more than one type of atom.
Pure substances are forms of matter that have a definite and unchanging chemical composition.
Which of the following is NOT an alloy?
brass
bronze
iron
steel
Which of the following is a compound?
air
salt water
alcohol solution
pure water
Which is a strong base?
aqueous ammonia
citric acid
sodium hydroxide
sulfuric acid
Which of the following will turn a blue litmus paper to red when in aqueous solution?
Vinegar with pH level 2.4
Pure water with pH level 7
Egg white with pH level 7.6
Household ammonia with pH level 11
How does the nature of the solute and solvent affect the solubility of a solute?
Polar solvents will only dissolve polar solutes
Nonpolar solute will only dissolve polar solvents
Nonpolar solvents will only dissolve polar solutes
Nonpolar solvents will not dissolve nonpolar solutes
What is the effect of the solute’s particle size to its rate of dissolving?
Smaller particles will dissolve faster because they move fast
Smaller particles will dissolve faster because they are soft
Smaller particles will dissolve faster because of the greater surface area exposed to the solvent
Smaller particles will dissolve the at the same rate as the larger particles because particle size doesn’t affect at all
What happens to the rate of dissolving as the concentration of solution increases?
increases
decreases
nothing
remain the same
Which will speed up the dissolution process of a solute?
Stirring the solution
Putting larger size of solute
Adding more solute in the solution
Lowering the temperature of the solvent
Which of the following is considered a strong electrolyte when in aqueous solution?
acetic acid
carbonic acid
hydrochloric acid
pure water
Which of the following will NOT a result of putting a nonvolatile solute in a solution?
Boiling point elevation
Freezing point depression
Lowering of vapor pressure
Osmotic pressure depression
Which kind of microscope uses light and lenses to magnify objects up to about 1 500 times larger than its original size?
confocal scanning microscope
electron microscope
light compound microscope
scanning microscope
Which microscope is known as a dissecting microscope that is used to look at external structures of a specimen, such as insect?
compound microscope
confocal scanning microscope
stereomicroscope
phase-contrast microscope
What part of the cell is a stack of flattened sacs located very close to the endoplasmic reticulum?
golgi apparatus
lysosome
mitochondria
nucleus
Which type of cell lacks nucleus but posses a region called nucleoid region, where the DNA is stored?
animal cell
eukaryotic cell
plant cell
prokaryotic cell
Which of the flowing is the male part of a flower?
corolla
pistil
stamen
sepal
Which holds the anther?
carpel
filament
ovary
pistil
Which is a stalk that connects the stigma to the ovary?
calyx
ovum
stamen
style
Which is from a bulb?
ginger
onion
strawberry
sugarcane
