Laws of Matter
This law states that matter cannot be created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
Density is classified as this type of property.
What is an intensive property?
Salt dissolved completely in water forms this type of mixture.
What is a homogeneous mixture (solution)?
Matter that has definite volume but takes the shape of its container is this state.
What is a liquid?
If 5 g of sodium is in a 20 g compound, what is the percent by mass?
What is 25%?
This law states that a compound always contains the same elements in the same ratio by mass.
What is the Law of Definite Proportions?
Volume depends on the amount of substance present. It is classified as this type of property.
What is an extensive property?
Sand and iron filings together form this type of mixture.
What is a heterogeneous mixture?
Matter with definite shape and definite volume is this state.
What is a solid?
A compound is 40% sulfur. How many grams of sulfur are in 50 g of the compound?
What is 20 g?
This law explains why carbon can form both CO and COâ‚‚.
What is the Law of Multiple Proportions?
Ability to rust or burn is what type of property?
What is a chemical property?
A pure substance made of two or more elements chemically bonded together is called this.
What is a compound?
The process of forming pure solid crystals from a solution is called this.
What is crystallization?
A 60 g compound contains 18 g of nitrogen. What is the percent by mass?
What is 30%?
If 12 g of carbon reacts with 32 g of oxygen, and the container is sealed, what must be the total mass of products?
What is 44 g?
Shiny, malleable, and conducts electricity describes what type of property category?
What are physical properties?
A mixture of metals such as copper and zinc is called this.
What is an alloy?
Separating ink pigments on paper using a solvent is this technique.
What is chromatography?
If a compound is 10% hydrogen, how many grams of hydrogen are in 250 g?
What is 25 g?
In a closed system, 85 g of reactants produce 70 g of solid product. Where is the missing 15 g?
What is in the form of gas? (still part of total mass)
A substance that reacts with acid to produce bubbles is showing evidence of this.
What is a chemical property (or chemical change)?
Unlike mixtures, substances cannot be separated by these methods.
What are physical means (like filtration or evaporation)?
When ice melts but remains Hâ‚‚O, this type of change has occurred.
What is a physical change?
If 36 g of a compound contains 9 g of oxygen, and the rest is carbon, what percent of the compound is carbon?
What is 75%?