properties of matter
color, boiling point, and malleability
What is a physical property?
wood burning, silver tarnishing, hard boiling an egg
What are chemical changes?
stainless steel, saltwater, lotion
what is a homogenous mixture?
substance that cannot be separated into simpler substances by physical or chemical means
the separating technique we used in the lab
what is filtration?
tendency to rust, the ability to burn, and oxidixing
What is a chemical property?
ice melting, breaking a pencil in half, grinding coffee beans
what are physical changes?
blood, bird seed, granite
What are heterogenous mixtures?
separates substances based on their movement through a special paper or material
what is chromatography?
particles are close together, has a definite shape and definite volume
What is a solid?
chemical reaction that involves one or more substances changing into new substances
what is a chemical change?
What is distillation?
32 g of carbon combine with 64 g of oxygen. the mass of the reactants is...
96 g
states that if the elements X and Y form two compounds, the different masses of Y that combine with a fixed mass of X can be expressed as a ratio of small whole numbers
what is the law of multiple proportions?
takes the shape of its container and matches volume of its container
What is a gas?
new substances formed in a chemical reaction
separates by formation of a solid, pure particles from a solution
What is crystallization?
what is the percent by mass of oxygen if there is 6 g of oxygen in a 58 g compound?
10.3%
Sample 1 had 10 g of X, 12 g of Y, and 4 g of Z. What is the percent by mass of X?
38.5%
the property of the Statue of Liberty that causes it to be green!
What is the chemical property?
(specifically oxidation)
240 g of compound XY has 130 g of element X. How many grams of Y are in the compound?
What is 110g?
What is a solution?
states that regardless of the amount, a compound is always composed of the same elements in the same proportion by mass
What is the law of definite proportions?
If 4 g of element X combines with 9 g of element Y to form compound XY, how many grams of Y are needed to form compound XY2?
18 g