Unit 2 Flashcards
The color of ink is a_
B- physical property
Unit 2 Concept 2 page 8
Three examples of physical changes are
Burning of gasoline, rotting an egg, and exploding fireworks
Unit 2 concept 2
Page 10
In a solution, the substance that is being dissolved is the
Solute
Unit 2 Concept 2
Page 11
A flask containing molecules of a gas A and a separate flask containing molecules of gas B are both at the same temperature p. Gases A and B must have equal
Average kinetic energies
Unit 2 Concept 3
Page 26
Which term best describes when particles escape from the surface of a liquid and becoming gaseous?
Evaporation
Unit 2 Concept 3
Page 28
Milk, paint, and Mayo are all examples of
Heterogeneous mixtures
Unit 2 Concept 1
Page 3
The particles in a liquid are usually
Closer together and lower in energy than in a gas
Unit 2 Concept 4
Page 32
Using the data table to the right, determine the identity of a cube of metal that measures 1.2 cm on each side and has a mass of 18.15 grams.
Silver
Unit 2 Concept 2
Page 9
The Law of Conservation of Mass states
Mass is not lost or created during a chemical change
Unit 2 Concept 2
Page 11
Flammability of a substance
Chemical property
Unit 2 Concept 2
Page 10
Boiling water
Physical change
Unit 2 Concept 2
Page 10
Density of an object
Physical Property
Unit 2 Concpet 2
Page 8
Rusting of fishing pole
Chemical change
Unit 2 Concept 2
Page 10
In term of saturated, how would you classify a KBr solution with a concentration of 90 g and 100 g of water at 10 Celsius
Supersaturated
Unit 2 Concept 4
Page 32
Name 2 places you can find plasma
Stars and neon lights
Unit 2 Concept 3
Page 27
Bose- Einstein condensates are used to simulate conditions in a
Black Hole
Unit 2 Concept 3
Page 27
Iron and oxygen react to form rust. What will happen to the mass of the rust compared to the mass of the iron and oxygen before the reaction? Explain why this will occur.
Same because Law of Conservation of mass says matter cannot be created or destroyed, even in a chemical change
Unit 2 Concept 2
Page 11
List the three points in the kinetic-molecular theory.
All matter is made of particles
Particles collide with each other and the container they are in
All particles are in constant random motion
Unit 2 Concept 3
Page 26
List and explain the three factors that increase the solubility rate of a substance
Solute size- rate because more surface area
Temperature- rate because more ke particles collide more
Stirring- rate because it brings fresh solvent in contact with solute
Unit 2 Concept 4
Page 33
Name on similarity between compounds and homogeneous mixtures and one difference.
Similarity= both involve 1 element Difference= compound is chemically combined mixture is physical
Unit 2 Concept 1
Page 3
Explain how salt dissolves in water
H+ of water attract Cl-
O-2 of water attract Na+
Water surrounds each ion and continues until all ions are separated
Unit 2 Concept 4
Page 33
