Which of the following containers most likely only holds gas?

A student has a jar that contains: a penny, cotton ball, plastic ruler, eraser, metal paper clip, rubber band, iron nail, and key. Whcih property CANNOT be used to classify these objects into more than one group?

Which material would be best to use to insulate electrical wires?

Given the mass of substances: water 125g, toothpicks 5g, table salt 30g, sugar cubes 20g, alcohol 98g, cooking oil 75g, marbles 40g, plastic cubes 35g. What's the difference in grams between the total mass of liquids and the total mass of solids?

A teacher wears protective gloves to lift a metal pan with boiling water from a hot plate. Why are protective gloves necessary?

Some objects that blew into a swimming pool after a party need to be removed. The objects include foam cups, keys, coins. Which explains a useful method for removing some of the objects?

Which is the best conductor of electricty?

Italian dressing, made of vinegar and oil is used for salad. Why would a person want to shake the salad dressing before using it?

Cracks in the seafloor called hydrotherman vents send streams of hot water into the ocean. The water from a vent 387 degrees celsius. How many degrees above the boiling point of water is the temperature?

At what temperature did the water outside of a school building with ice on the edge of its roof most likely begin to change water to ice?

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