Fall Final Review Get a calculator, periodic table and scratch paper, let’s get ready to review.

Identify the Number of Sig Figs 6.022 x 10 23 Identify the Number of Sig Figs 0.0006 500 5000.00 2080 2.50 x 10-3 1.010 x 105

Identify the Independent variable 116334 Bart believes that mice exposed to microwaves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the microwaved mice were able to push the block away. 7 out of 10 of the non-microwaved mice were able to do the same. Identify the Independent variable

Identify the Dependent Variable microwaving Bart believes that mice exposed to microwaves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the microwaved mice were able to push the block away. 7 out of 10 of the non-microwaved mice were able to do the same. Identify the Dependent Variable

Strength of the mice Where do significant digits come from?

What would be the mass of something with combination C N Y? The Instrument What would be the mass of something with combination C N Y?

Perform the conversion 222.90g 6 km = ______ m Perform the conversion

6000 m Classify the following as either a suspension or colloid Oil and water

Suspension Substance Mixtures Element Compound Homogeneous Heterogeneous Will not settle Suspension Will settle What category is missing? Solution

Colloid Which state of matter is missing?

Solid Tensile Strength Brittleness Hardness Elasticity Malleability Which word means how much pulling a substance can take before breaking

Tensile Strength A word that describes an object’s ability to sink or float.

Buoyancy An object will always displace its own ______ when fully submerged. This type of measurement is called _______.

Volume, water displacement A 30cm3 block of gold, weighing 5.67N is carefully submerged in a tank of mercury. One cm3 of mercury weighs 0.13N. What is the buoyant force?

4N The weight of a rock suspended from a spring scale is 0.30N in air. If the rock is suspended in water the spring scale reading changes to 0.15N. What is the buoyant force acting on the rock?

0.15N Calculate the density if 13.65g of vegetable oil has a volume of 15.0mL

0.910 g/mL A measure of a material’s resistance to flow.

Viscosity P1V1 = P2V2 V1 V2 T1 T2 A balloon holds 20L of helium at 283K. If the temperature doubles, and the pressure does not change, what will be the new volume of the balloon? =

40L P1V1 = P2V2 V1 V2 T1 T2 = You pump 25.0L of air at atmospheric pressure, 101.3kPa, into a soccer ball that has a voume of 4.50L. What is the pressure inside of the soccer ball if the temperature does not change?

563 kPa Oxygen hogs the electron pair making it partially negative and Hydrogen end partially positive This is called being ______.

Polar An attraction between the oxygen of one water molecule and the hydrogen of another Capillary action, high specific heat, adhesion, cohesion, surface tension The above information is describing _____ .

Hydrogen Bonding Surface tension Adhesion Cohesion Capillary Action High Specific heat Sand being hotter than the water at the beach This describes which water property

High Specific Heat Alkaline Slippery Produce more hydroxide ions These are all characteristics of a ________.

Base ____________how quickly a solute will dissolve in a solvent

Dissolving Rate What element is this?

Magnesium Ion or neutral?

Ion Everything to the left is a __________ .

Metal Group 13 (3A) How many valence electrons does this group have?

3 Atom size ___________ going down a group.

Increase What would the chemical formula be for a bond between Calcium and Chlorine

Calculate the molar mass for NaHCO3 CaCl2 Calculate the molar mass for NaHCO3

How many molecules are present in one mole? 84.01 g How many molecules are present in one mole?

6.02 x 1023 116334 Microwaving Strength of mice Instrument 222.90g 6000m Suspension Colloid solid Tensile strength Buoyancy Volume, water displacement 4N 0.15N 0.910 g/ml Viscosity 40 L 563 kPa Polar Hydrogen bonding High specific heat Base Dissolving rate Magnesium Ion Metal 3 Increases CaCl2 83.60g