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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
pressurized water vapor rises rapidly and evaporates.
B
air in the glass increases the water temperature and causes bubbling.
C
air trapped in the glass is warmed and expands in volume.
D
water condenses on the glass and escapes as a gas.
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
1:1
D
1:52
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 iss flammabble.
B
The chemical is corrosive.
C
The chemical is pressurized.
D
The chemical is toxic.
4) The safest way to dilute concentrated sulfuric acid is to add--
A
the acid to a small volume of water and then add more water
B
dilute sulfuric acid to a small volume of the concentrated acid
C
the acid to water slowly while stirring constantly
D
a series of small volumes of waqter to the acid while stirring
5) Which of these tools is most useful in identifying single-celled organisms in a sample of pond water?
A
concave mirror
B
microscope
C
spectroscope
D
convex lens
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 pH, determine density, determine boiling point
B
observe volume, determine mass, observe color, determine pH
C
observe odor, determine temperature, observe color, determine boiling point
D
determine mass, observe volume, determine temperature, observe odor
7) Which set of equipment would be best to use to test the effect of temperature on solution acidity?
A
a triple-beam balance and litmus paper
B
a triple-beam balbance and a thermometer
C
a thermometer and a pH meter
D
a pH meter and a barometer
8) Which of these activities can help conserve natural resources?
A
recycling carboard boxes
B
driving large cars
C
washing small loads of laundry
D
builing wooden fences
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
review their notes
B
wash their hands
C
remove their goggles
D
assist their lab partner
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
thermometer
B
Triple-beam balance
C
magnifying glass
D
prism
*select an answer for all questions
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