Give an example of where you may see heat and light produced in everyday life which is not evidence of a chemical reaction. Explain the source of the heat and light.

The taste known as sour is caused by: A. the presence of hydrogen ions. B. hot materials. C. sugars. D. any kind of ions.

Give an example of homeostasis in your body

Which element is more reactive? A) sulfur B) aluminum

the factors that affect gravitational attraction between two objects are 1. force and distance 2. mass and distance 3. weight and distance 4. mass and weight

Ionic formula for sodium oxide

What was one of the main benefits to the use of the icebox for cooling food?

How many moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 0.98 atm and a temperature of 373 K?

What are the building blocks

If the specific heat of copper is 0.711 J/g•°C, how much copper would it take if the heat given off is 54.85 calories and the temperature change is 205°C.

Why is it is difficult to compress a liquid? a. liquid takes the shape of its container. b. the liquid particles flow away when compressed. c. liquid becomes solid when compressed. d. the liquid particles are very close together.