Semester Exam Review

Where on the Periodic Table would metals, nonmetals and metalloids be located?

Describe the properties of metals, nonmetals and metalloids. Metals- Nonmetals- Metalloids- Describe the properties of metals, nonmetals and metalloids. Metals- Nonmetals- Metalloids- have luster, malleable, ductile, strong (resist bending), high melting and boiling points, good conductors, magnetic do not have luster, brittle, not malleable, not ductile, low melting and boiling points, not good conductors tendencies of both metals and nonmetals, make good semiconductors

Using the Periodic Table, identify the symbols for the following elements. Nitrogen- Oxygen- Silicon- Using the Periodic Table, identify the symbols for the following elements. Nitrogen- Oxygen- Silicon- N O Si

What is a compound? How is it different than an element Compound- Element- What is a compound? How is it different than an element Compound- Element- 2 or more elements combined pure substance that can not be broken down

Determine if the following are compounds or elements. H2O- Na- C3H8- H2SO4- Ag- Determine if the following are compounds or elements. H2O- Na- C3H8- H2SO4- Ag- Compound Element Compound Element

How many elements are found in the following equation? List them. CH 4 + 2O 2  CO 2 + 2H 2 O How many elements are found in the following equation? List them. CH 4 + 2O 2  CO 2 + 2H 2 O 3 Elements: Carbon Hydrogen Oxygen

How many atoms are found in C 6 H 12 O 6 ? = 24

What are the most common elements found in the Earth’s crust, the atmosphere, oceans and living things? Earth’s crust- Atmosphere- Oceans- Living things- What are the most common elements found in the Earth’s crust, the atmosphere, oceans and living things? Earth’s crust- Atmosphere- Oceans- Living things- Oxygen & Silicon Nitrogen & Oxygen Oxygen & Hydrogen (watch Na and Cl) Oxygen & Carbon

How do you determine the volume of a cube? Length x Width x Height A cube is a perfect square… All sides are equal! Length Width Height

How do you determine the volume of an irregular object? 1.Add a certain amount of water to a graduated cylinder. 2.Place the object in the cylinder. 3.Determine the new volume. 4.Subtract the original volume from the second volume to get the volume of the object.

How do you measure the mass of an object? Measure mass with a triple beam balance - or calculate by- Density x Volume Mass VolumeDensity

How do you determine the density of an object? Density = Mass/Volume Mass VolumeDensity

A graduated cylinder begins with 50ml of water. After a 100g marble is added to the cylinder, the level of water increases to 70ml. What is the density? Mass = 100 g Volume = 70ml – 50 ml = 20 ml Density = Mass/Volume D = 100g/20ml D = 5g/ml Mass VolumeDensity

A 20g cube has sides that are 4cm. What is the density? Mass = 20 g Volume = Length x Width x Height = 4 x 4 x 4= 64 cm 3 Density = Mass/Volume D = 20/64 D = g/cm 3 Mass VolumeDensity 4 4 4

What evidence can be used to determine if a chemical reaction has occurred? Gas Bubbles Precipitate Formed (Solid) Color Change (Must be a completely new color) Temperature Change (Hot/Cold) Taste/Smell Light

What is a mineral? Naturally formed, inorganic solid with crystal structure.

A variety of physical properties are used to identify minerals. Describe the following. Luster- Streak- Hardness- A variety of physical properties are used to identify minerals. Describe the following. Luster- Streak- Hardness- reflects light color in powder form (we tested on the white porcelain plates/tile in the mystery mineral id lab) ability to resist being scratched (we also tested this in the mystery mineral if lab) penny, nail, piece of glass, knife

Which 2 elements can be scratched by calcite? Gypsum & Talc HARDNESSMINERAL 1Talc 2Gypsum 3Calcite 4Fluorite 5Apatite 6Orthoclase 7Quartz 8Topaz 9Corundum 10Diamond

What can you determine by knowing that a mineral has a hardness of 6.5? What can you determine by knowing that a mineral has a hardness of 6.5? Can be scratched by – diamonds, corundum, topaz & quartz. It can scratch – talc, gypsum, calcite, flourite, apatite, orthoclase HARDNESSMINERAL 1Talc 2Gypsum 3Calcite 4Fluorite 5Apatite 6Orthoclase 7Quartz 8Topaz 9Corundum 10Diamond

If you have a mineral that can scratch a penny (3.5) but can be scratch by apatite, what would be the hardness? If you have a mineral that can scratch a penny (3.5) but can be scratch by apatite, what would be the hardness? 4 HARDNESSMINERAL 1Talc 2Gypsum 3Calcite 4Fluorite 5Apatite 6Orthoclase 7Quartz 8Topaz 9Corundum 10Diamond

Use an arrow to show which direction the energy would flow. Fire ˚ C Soup - 85˚C *** Remember from the video warmer temperature will move to cooler temperature until they are equal.

Describe the following ways that heat can be transferred and give an example. Conduction- Convection- Radiation- Describe the following ways that heat can be transferred and give an example. Conduction- Convection- Radiation- transfer through direct contact transfer by movement in liquid or gas transfer through matter/space as waves

Describe 3 ways KH could reduce the amount of electricity that is used? 1.Use solar panels 2.Use hand held sharpeners instead of electric 3.Don’t use projectors as much 4.Turn off lights/computers when not in use 5.Don’t use the copiers as much

Describe the energy transformations that occur in the following examples. Hair Dryer- electric to heat and sound and mechanical Flashlight – chemical to electrical to light and thermal Wind Turbine- kinetic to mechanical to electric Eating an Apple- chemical to kinetic/mechanical to chemical and heat Car Engine- chemical to mechanical to sound and heat and kinetic and electrical and light