5 Written Questions

1. Water or liquid molecules in gas form in air hits a cooler
   surface, losing thermal energy and changing from a gas state
   to a liquid state therefore clinging to the side of the cooler
   object. (Water drops on outside of a glass of soda with ice)
2. Volume: V = l x w x h V = (5.5 cm)(1.1 cm)(2.35 cm) = 14.52 cm3
3. If the water level rises 5 ml, then the volume of the object is equal to
   the volume of displaced water so the volume of the cube is 5 ml
   (or 5 cm3). [1 ml = 1 cm3]
   V = L x W x H and V = 5 cm3
   5 cm3 = L x W x H {where for a cube all sides equal} (l = w = h)
   cube root of 5 cm3 = 1.71 cm3 = L
4. A situation that is set up in order to observe and measure/record what happens.
5. mixture that cannot be separated into different kinds of
   matter using physical means.

5 Matching Questions

1. Joseph John Thomson
2. Freezing
3. How do you determine how many valence electrons an atom has?
4. If the photogate is hooked up and only the A light is on what is measured?
5. Group 18

1. a Family on right side of table, known as the Noble gases,
   these atoms have full valence energy levels and are neutral
   (no charge). Rarely react with other elements.
2. b Discovered the existence of the electron.
   Discovered positive & negative charges existed equally in atom. (Plum
   pudding model)
3. c You can determine how many valence electrons an atom has by looking
   at the column of the periodic table the atom is in, this tells you how
   many valence electrons it has (Group 1 = 1 valence electron, etc.)
4. d The timer records how long in seconds an object blocks and then unblocks the A beam on the A photogate.
5. e Matter changes from a liquid to a solid at low temperatures
   (water turns to ice by losing thermal energy). Molecules slow down.

5 Multiple Choice Questions

1. Matter changes from a liquid to a solid state (candle wax
   that has dripped away from candle solidifies)
   1. Solidification
   2. Elasticity
   3. Malleability
   4. Define matter
2. the ratio of mass to volume, measures the "compactness" of
   the material
   1. meniscus
   2. Density
   3. element
   4. Freezing
3. Elements on the border of metals and non-metals and
   demonstrate characteristics of both metals and non-metals
   1. Melting
   2. Metalloids
   3. Solid
   4. Brittleness
4. technique to find the volume of an object by submerging
   it in water and measuring the volume of water that is
   pushed aside is equal to the volume of the object.
   1. Brittleness
   2. Ionic Bond
   3. displacement
   4. Columns
5. Matter changes from a solid to a liquid. Atoms and molecules
   gain thermal energy and move out of position.
   (Crayons melt on hot windowsill)
   1. Freezing
   2. Boiling
   3. Melting
   4. Solid

5 True/False Questions

1. Group 3-12 → Shorter families in the middle of table, known as
   transition metals whose valence electrons vary.

   True        False

2. element → Volume: V = l x w x h V = (5.5 cm)(1.1 cm)(2.35 cm) = 14.52 cm3

   True        False

3. Electron → negatively charged particles found in energy levels around
   nucleus.

   True        False

4. Why do atoms form chemical bonds? → To become chemically stable and
   neutral, which means to have a full valence electron shell.

   True        False

5. Nucleus → dense center of atom made up of protons and neutrons,
   makes up most of atoms mass

   True        False