Test- Unit 2 Matter Flashcards
1
Q
- Three examples of a physical change are:
A
Boiling water, blowing up a balloon, and melting a candle
U2, C2, properties of matter, pg 10
2
Q
- In a solution, the substance that is being dissolved is the
A
Solute
U2, C2, Properties of matter, pg 8
3
Q
- What is another name for a homogeneous mixture?
A
Solution
U2, C1, Classification of matter, pg 3
4
Q
- Which term best describes when particles escape from The surface of a liquid and become gaseous?
A
Evaporation
U2, C3, States of Matter, pg 28
5
Q
- The solubility of which salt is the least affected by temperature
A
NaCl
U2, C4, Solutions, pg 33
6
Q
- The five parts of the heating curve:
A
- Solid
- melting, heat of fusion
- Liquid
- Boiling, heat of vaporization
- Gas
U2, C3, States of Matter, pg 29
7
Q
- Bose-Einstein condensates are used to simulate conditions in what?
A
Black Holes
U2, C3, States of Matter, pg 27
8
Q
- What are the three points of the kinetic molecule theory?
A
- All matter is made up of tiny particles
- The particles are always in constant random motion
- Particles collide with each other and container that they are in
U2, C3, States of matter, pg 26
9
Q
- The three factors that increase the solubility (dissolving) rate of a substance:
A
- Stir- Brings fresh solvent into contact with undissolved salute
2.Temperature- it increases the kinetic energy of the particles, therefore more collisions - Size of the solvent- increases the surface area on the solute so the solvent has more places for contact
U2, C4, Solutions, pg 33
10
Q
- Name one similarity between compounds and homogeneous mixtures and one difference
A
Similarly- can both hold two or more elements
Difference - compound is chemically combined, mixture is physically Combined
U2, C1, Classification of matter, pg 2-3
11
Q
- How does salt dissolve in water?
A
Opposites attract, attractive force pulls ions away from Crystal, water surrounds each ion and continues until ions are separated.
U2, C4, solutions, pg 33
