Semester Exam Review

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

Describe the properties of metals, nonmetals and metalloids. have luster, malleable, ductile, strong (resist bending), high melting and boiling points, good conductors do not have luster, brittle, not malleable, not ductile, brittle, 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- N O Si

What is a compound? How is it different than an 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- Compound Element

How many elements are found in the following equation? List them. CH4 + 2O2  CO2 + 2H2O 3 Elements: Carbon Hydrogen Oxygen

How many atoms are found in C6H12O6? 6 + 12 + 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- Oxygen & Silicon Nitrogen & Oxygen Oxygen & Hydrogen Oxygen & Carbon

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

Step 3 Level – Step 1 Level = volume of irregular object How do you determine the volume of an irregular object? Measure water in a cylinder. Add irregular object (Ex. Marble, Paper clip, …) Remeasure the water level in the cylinder. Calculate the difference in water level by subtracting the beginning water level (step 1) from the water level once the irregular object has been added (Step 3). Step 3 Level – Step 1 Level = volume of irregular object

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

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

D = 5g/ml3 Mass = 100 g Volume = 70ml – 50 ml = 20 ml 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/ml3 Mass Volume Density

D = 0.3125 g/cm3 Mass = 20 g Volume = Length x Width x Height = A 20g cube has sides that are 4cm. What is the density? 4 4 Mass = 20 g Volume = Length x Width x Height = 4 x 4 x 4= 64 cm3 Density = Mass/Volume D = 20/64 D = 0.3125 g/cm3 4 Mass Volume Density

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

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

A variety of physical properties are used to identify minerals 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 in the mystery mineral id lab) ability to resist being scratched (we also tested this in the mystery mineral id lab)

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

What can you determine by knowing HARDNESS MINERAL 1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond 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

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

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

Use an arrow to show which direction the energy would flow. Soup - 85˚C Fire - 1000˚ C *** Remember from the video warmer temperature will move to cooler temperature until they are equal.

Use the data chart to answer the question about M&Ms. Color of Candy Average % in each bag Brown 30 Red 20 Yellow Green 10 Orange Blue