Classification of Matter
What type of mixture is saltwater?
Homogeneous Mixture
A 3.5 kg iron shovel is left outside through the winter. The shovel is found to have a mass of 3.7 kg in the spring time. How much oxygen combined with Iron?
0.2 kg of oxygen
A characteristic that can be observed or measured without changing the composition.
physical property
The ability of a substance to combine or change into another substance is called...
chemical property
What is a measure of average kinetic energy of random motion of molecules in matter
Temperature
What type of mixture is gasoline?
homogenous
A 5 g block of tin reacts with hydrochloric acid. The mass of the products is 8.1 grams. How much hydrochloric acid was used?
3.1 g hydrochloric acid
Density is an example of what type of physical property?
Intensive
Flammability is what property
chemical property
A chemical reaction that releases heat is an
exothermic reaction
What kind of mixture is Ranch dressing?
heterogeneous
In a flask, 10.3 g of aluminum reacted with 100.0 g of bromine. After the reaction 8.5 g of bromine remained unreacted. How many g of bromine reacted?
91.5 g of bromine
A length of metal is a specific example of a physical property known as
extensive properties of matter.
Forms green copper carbonate compound when contacted with air.
chemical change
What is Plasma? Give two examples.
Ionized gas at super high temperatures.
Ex: Sun, Aurora Borealis, Lightning, Flames
What is C12H22O11?
Compound
A 10 g sample of mercury reacts with oxygen to form 20 g of a substance. How many grams of oxygen reacted?
10 grams of oxygen.
A sample of water containing 15 mg is at a temperature of 25 degrees Celsius. What property does temperature represent?
Intensive property.
Good conductor of heat and electricity
physical property.
What is Sublimation? Give an example
Solid changing directly to gas.
Dry ice
What is Neon?
Element
In an experiment 10 g of red mercury oxide is placed in a flask and heated until it is converted to liquid. The liquid mercury has a mass of 9.26 g. What is the mass of oxygen formed in the reaction.
0.74 g
Concentration is an
Intensive property
Ability to react violently with water
chemical property.