A gas is heated from 298 cap k to 367 cap k while its volume changes from 2 point 5 liters to 3 point 9 liters If the initial pressure of the gas is 1 point 1 atm , what is the final pressure of the gas?
Which is most likely a physical change?
The density of solid aluminum is 2 point 7 0 the fraction with numerator g and denominator cm cubed If a 1 g piece of aluminum is dropped in a cup of water, what will happen to the aluminum? (The density of water is 1 point 0 0 the fraction with numerator g and denominator cm cubed )
Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?
Which procedure would best allow a scientist to observe a chemical property of hydrochloric acid HCl solution?
Three grams of the same substance in different phases are stored in three different containers. Each container is barely large enough to hold the substance. Which statement can be known about the behavior of the atoms in each container?
Which statement is a description of Charles’s law?
Which is the amount of matter in an object?
Which is a characteristic of atoms?
Which would show an example of how physical changes are reversible?
While researching scuba diving, Pablo reads how hot a tank should get while being filled with air. Which law best explains why the scuba tank would heat up?
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still able to slide past each other. What is most likely the phase of the substance?
Which describes a feature of the physical changes of all substances?
Which is the process by which a gas changes to a solid?
Tijuan mixed a solid and a liquid together in a beaker. He determined that a chemical change occurred. If his conclusion is correct, which substances could he have been observing and why?
During which change of state do atoms lose energy?
Which gas law describes the relationship between temperature and pressure at a constant volume?
Rahul sees a flock of birds. He watches as the flying birds land in neat little rows on several power lines. Which change of state does the motion of the birds most closely model?
Which sample material(s) could be liquid?
Which student made a mistake in her statement?
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