Which of the following is not a potential sign of chemical change?

a. release of gas

c. change of color

b. evaporation of water

d. production of gas

The atoms in a molecule of hydrogen chloride are held together by

Several students were playing baseball outside. Nate wore a white shirt, Christina wore a black shirt, Autumn wore a yellow shirt, and Tristan wore a pink shirt. Who will be the most likely to get hot first? A. Autumn B. Tristan C. Christina D. Nate

Which energy transformation is taking place when an animal eats food so it can keep warm

15) Which of the these is a balanced chemical equation? A) CO (g) + O2 (g) → CO2 (g) B) CO (g) + 2O2 (g) → 2CO2 (g) C) 2CO (g) + O2 (g) → 2CO2 (g) D) 2CO (g) + 2O2 (g) → 2CO2 (g)

Andre adds a spoonful of baking soda to a glass of vinegar. Bubbles begin to appear in the vinegar. The bubbles signal the formation of a

What type of change is a substance that changes form but remains the same?

Which side of the mountain experiences high temperature in windward or leeward

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.