Which of the following are observations? The candle floats. The tires are flat. The dog is barking. The tire is flat because of a decrease in temperature. If a person walks by, then the dog will bark.

Potassium hydroxide is classified as an Arrhenius base because KOH contains (1) OH - ions (2) O2 - ions (3) K + ions (4) H + ions

What is the overall goal of diffusion osmosis and facilitated diffusion?

A compound has an empirical formula of CHN. What is the molecular formula, if it's molar mass is 135.13 g/mol? (C=12.01 amu, H=1.008 amu, N = 14.01)

A laboratory animal exercised on a treadmill raises a 200 g mass 1.55 m, and at the same time loses 5.0 J energy as heat. Assume the animal is a closed system. How much does its internal energy change?

When recording a measurement what two things should be considered? Choose two.

A burning match is an example of a chemical change phase change nuclear change physical change

The table below shows the shapes of two samples, C and D, when placed in three containers of different shapes.

How many grams of KCl are produced when 60 grams of K are reacted?

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How do compounds affect an atom's stability