Question
Which statement is true about a triple beam balance and spring scale?(1 point)
Responses
Both a triple beam balance and a spring scale are used to measure the weight of an object.
Both a triple beam balance and a spring scale are used to measure the weight of an object.
A triple beam balance is used to measure the weight of an object, and a spring scale is used to measure the mass of an object.
A triple beam balance is used to measure the weight of an object, and a spring scale is used to measure the mass of an object.
Both a triple beam balance and a spring scale are used to measure the mass of an object.
Both a triple beam balance and a spring scale are used to measure the mass of an object.
A triple beam balance is used to measure the mass of an object, and a spring scale is used to measure the weight of an object.
A triple beam balance is used to measure the mass of an object, and a spring scale is used to measure the weight of an object.
Both a triple beam balance and a spring scale are used to measure the weight of an object.
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Why is agar medium used in Petri dishes?(1 point)
Responses
It makes bacteria appear larger.
It makes bacteria appear larger.
It sterilizes the petri dish.
It sterilizes the petri dish.
It helps microorganisms grow.
It helps microorganisms grow.
It makes cells glow.
It helps microorganisms grow.
Which statement accurately describes test tubes and beakers?(1 point)
Responses
Test tubes are better for transferring liquids than beakers.
Test tubes are better for transferring liquids than beakers.
Beakers can be held over a flame; test tubes cannot.
Beakers can be held over a flame; test tubes cannot.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers and test tubes both have rounded bottoms.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Which is a disadvantage of using Celsius thermometers?(1 point)
Responses
They can measure the boiling point of a liquid.
They can measure the boiling point of a liquid.
They can take accurate temperature readings.
They can take accurate temperature readings.
They can contain mercury that is very harmful to humans.
They can contain mercury that is very harmful to humans.
They can measure temperatures of liquids quickly.
They can contain mercury that is very harmful to humans.
What safety equipment is often the minimum requirement for personal protection in a laboratory?(1 point)
Responses
gloves
gloves
safety goggles
safety goggles
fire blanket
fire blanket
apron