Density
What is water?
This type of change does not alter the chemical properties of the substance.
What is a Physical change?
Two or more substances mixed together that are not chemically combined.
What is a mixture?
According to this a chemical equation must be balanced?
What is the Conservation of Mass?
Surface area, temperature increase, and catalysts will increase the speed during this type of reaction.
What is Chemical Reaction / Change?
This tool is used to measure the mass of a substance or object.
What is a balance/scale?
What is 0 degrees celsius?
This is the part of the solution that is dissolved.
What is a solute?
An ice pack will have this type of reaction when the chemicals are mixed.
What is an endothermic reaction?
In this type of reaction, energy is absorbed.
What is an endothermic reaction?
CALCULATING DENSITY:
Jack's rock with a mass of 12g and a volume of 6 cm3. What is Jack's rock?
Sandstone = 2 grams/cm3
Shale = 2.7 grams/cm3
What is sandstone?
What is it called when a solid turns directly into a gas?
What is Sublimation?
A can of soda will decrease in mass because it is this type of system.
What is an Open system?
This is one way to increase the speed of an experiment.
What is heat?
What is a catalyst?
What is a higher concentration of reactants?
What is to increase the surface area?
What is a phase change?
This gas has the highest density. The grams are the same.
Nitrogen Mass = 20 grams Volume= 1 mL
Radon Mass = 20 grams. Volume = 194 mL
Chlorine Mass = 20 grams. Volume = 64 mL
What is the density of radon?
This property of matter allows the separation of saltwater.
What is a different boiling point?
An example of this type of mixture would be soda because you cannot see the boundaries between the parts.
What is a Homogeneous mixture?
A number written in front of a chemical formula is called this.
What is a coefficient?
The Earth does not gain or lose mass because it is this type of system.
What is a closed system?
This element would have the highest mass with a volume of 100 cm3
Pure gold has a density of 19 g/cm3.
Pure silver has a density of 10.5 g/cm3
What is gold?
This is the reason why bridges have gaps and sidewalks have breaks from constant cement.
What is the expansion rate or coefficient?
What must we do since materials expand at different rates?
This type of mixture has distinct parts that are mixed together. An example would be mixed nuts.
What is a heterogeneous mixture?
An example of this type of chemical would be Oxygen and Hydrogen being chemically combined to form water.
What is synthesis?
This is the system where the mass remained constant during the Alka seltzer experiment.
What is a closed system?