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Exit Level TAKS Objective 1 - 2
Test Description: Release TAKS questions and other questions for Objective 1
Instructions: Answer all questions to get your test result.
1) A glas is held upside down so that its open end is closed by the water's surface. Soon air bubbles gegin to escape from the glass. The best explanation for this is--
A
water condenses on the glass and escapes as a gas.
B
air trapped in the glass is warmed and expands in volume.
C
pressurized water vapor rises rapidly and evaporates.
D
air in the glass increases the water temperature and causes bubbling.
2) There is helium gas that is expaning for fill a larger container. Initial volume=2.50L. Mass=1g. Final volume=20.0L. What is the ratio of the gas's density (final to initial)
A
4:1
B
1:8
C
1:52
D
1:1
3) There is a picture that shows a chemical being poured on a hand and on a surface. The chemical is eating away at the two objects. What does this represent?
A
The chemical is corrosive.
B
The chemical is pressurized.
C
The chemical is toxic.
D
The chemical iss flammabble.
4) The safest way to dilute concentrated sulfuric acid is to add--
A
dilute sulfuric acid to a small volume of the concentrated acid
B
a series of small volumes of waqter to the acid while stirring
C
the acid to a small volume of water and then add more water
D
the acid to water slowly while stirring constantly
5) Which of these tools is most useful in identifying single-celled organisms in a sample of pond water?
A
convex lens
B
spectroscope
C
concave mirror
D
microscope
6) A student is working with four beakers that each contain a clear liquid. Which set of procedures would be best to determine whether one of the beakers contains only distilled water
A
observe odor, determine temperature, observe color, determine boiling point
B
observe odor, determine pH, determine density, determine boiling point
C
determine mass, observe volume, determine temperature, observe odor
D
observe volume, determine mass, observe color, determine pH
7) Which set of equipment would be best to use to test the effect of temperature on solution acidity?
A
a thermometer and a pH meter
B
a triple-beam balance and litmus paper
C
a triple-beam balbance and a thermometer
D
a pH meter and a barometer
8) Which of these activities can help conserve natural resources?
A
washing small loads of laundry
B
builing wooden fences
C
recycling carboard boxes
D
driving large cars
9) Students are doing a dissection lab. Students use hand lens, forceps, and a scalpel. Two of the students are done. These 2 students may do all of the following except--
A
assist their lab partner
B
wash their hands
C
remove their goggles
D
review their notes
10) Only 10% of the electrical energy operating a lightbulb is changed into visible light. Which instrument helps identify the energy change occurring to most of the remaining 90%?
A
magnifying glass
B
thermometer
C
prism
D
Triple-beam balance
*select an answer for all questions
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