1. All changes in phase are called this type of change.

2. This affects the state of matter.

3. When you grind a material up what does it increase?

4. What is the substance being dissolved called?

What volume of nitrogen gas is produced by the explosion of 65.0 g of sodium azide at STP? The balanced chemical equation is 2 NaN3 (s) = 2 Na (s) + 3 N2 (g) for this reaction. a. 33.6 L b. 67.2 L c. No right choice.

When baking soda (sodium bicarbonate or sodium hydrogen carbonate, NaHCO3) is heated, it releases carbon dioxide gas, which is responsible for the rising of cookies, doughnuts, and bread.

Which of the following is NOT a physical change? a. grating cheese c. fermenting of cheese b. melting cheese d. mixing two cheeses in a bowl

What structures are found in plant cells that are not what structures are found in plant cells that are not me found in animal cells

What is an ephemeral stream? A. One that is formed only from chemical weathering B. One that flows only after rainfall C. One that is formed only from mechanical weathering D. One that flows only in flat lands

What is the numerical meaning of centimeter

You run an experiment to test the effects of temperature on solubility. What would you heat? A.) solvent B.) solute C.) the room B.) the beaker

What happens when a firework is ignited?

The spines and thick wavy cuticle on a cactus are both what

What type of chemical process is used to create perfume?