Density
Elements and Compounds
Minerals
Metals, Nonmetals, and Metalloids
The Mix!
100
What is formula for density AND what are its correct units?
Mass divided by Volume; g/cm3 or g/mL
100
True or False: An element is a pure substance made up of different types of atoms.
False: An element is a pure substance made up of ONLY ONE type of atom.
100
True or False: 1) A mineral is naturally occurring 2) A mineral is inorganic 3) A mineral has a definite crystalline structure 4) A mineral has a chemical composition
1) True 2) True 3) True 4) True
100
Why are Metalloids considered to be semiconductors?
Metalloids are better conductors of electricity than nonmetals, however they are not as good of conductors of electricity like metals are.
100
Identify the following as an element or compound H2 NaCl O2 N2 SiCo
H2- Element NaCl- Compound O2- Element N2- Element SiCo- Compound
200
Answer the following questions: 1) What instrument is used to measure the volume of a REGULAR shaped object? 2) What instrument is used to measure the volume of an IRREGULAR shaped object? 3) What instrument is used to measure the mass of an object?
1) Ruler 2) Graduated Cylinder 3) Triple Beam Balance
200
Definition: a substance formed when two or more elements are combined.
What is a Compound.
200
List 3 physical properties of Minerals.
Luster Hardness Cleavage Fracture Streak Color
200
List 5 physical properties of Metals.
High Density Malleable Ductile Good Conductors of Electricity Shiny Luster Solids Hard
200
Define Chemical Symbol.
The symbol that represents an element on the Periodic Table of Elements
300
Explain the process of Water Displacement.
Step 1: Fill the graduated cylinder with water to an exact amount and Record the volume. Step 2: Drop the object into the graduated cylinder. Step 3: Record the new volume. Step 4: Subtract the Old Volume from the New Volume to get the actual volume of the object.
300
Give the chemical symbol for the following Elements: Sodium Calcium Oxygen Carbon
Na (Sodium) Ca (Calcium) O (Oxygen) C (Carbon
300
A mineral can either have metallic luster or non metallic luster. In your own words, describe what those terms mean.
Metallic Luster- mineral that resembles a metal and shines like a metal Non Metallic Luster- does NOT resemble a metal.
300
Are the following physical properties describing metals, nonmetals, or metalloids? Poor Conductors of Electricity Low Density Dull Luster Brittle Liquid or Gas
Nonmetals
300
Identify the following elements' chemical symbol: Nitrogen Chlorine Calcium Sulfur Sodium
Nitrogen - N Chlorine - Cl Calcium - Ca Sulfur - S Sodium - Na
400
Tommy wants to find the density of his new science book. He knows the book has a mass of 24g. Tommy uses his ruler to measure the volume. He finds the length to be 2cm, the width 3cm, and the height 4cm. Calculate the density of Tommy's book.
Density= Mass/Volume Mass= 24g Volume= 2cm x 3cm x 4cm = 24cm3 24/24 = 1 Density = 1 g/cm3
400
Give 3 examples of everyday compounds.
H20 NaCl CO2 CaCO3 SiO2
400
According to Moh's Hardness Scale, what is the softest mineral AND the hardest mineral? What does Moh's Hardness scale range from? Which number represent the softest and which number represents the hardest?
Softest: Talc Hardest: Diamond 1 to 10 (with 1 being the softest and 10 the hardest
400
1) Which group (Metals, nonmetals, or metalloids) are the most abundant on the Periodic Table? 2) Which group (metals, nonmetals, or metalloids) create the "stair case shape" on the Periodic Table?
1) metals 2) metalloids
400
If a baseball has a mass of 28g and displaces 4mL of water, calculate the density of the baseball.
Density= Mass/Volume Mass= 28g Volume= 4mL 28/4= 7 Density of the baseball is 7 g/mL
500
28.5g of iron metal is added to a graduated cylinder containing 45.5 mL of water. The water level rises to the 49.1 mL mark. From this information, calculate the density of the iron metal.
Step 1: Subtract 49.1 - 45.5 = 3.6 (Water Displacement) Step 2: Plug in the numbers into the formula for density: mass= 28.5g ; volume= 3.6mL Step 3: Divide 28.5/3.6 Answer: Density of Iron Metal is 7.92 g/mL
500
Identify the ELEMENTS in the following compounds: 1) H20 2) AgNO3 3) CCl4 4) NaNHO3
1) H: Hydrogen O: Oxygen 2) Ag: Silver N: Nitrogen O: Oxygen 3) C: Carbon Cl: Chlorine 4) Na: Sodium N: Nitrogen H: Hydrogen O: Oxygen
500
1) If Ms. Ledezma asks you to scratch a mineral across a Streak Plate, which physical property are you testing for? 2) True or False: Cleavage= a mineral breaking with EVEN, FLAT, SMOOTH sides
1) Streak 2) True
500
Define Malleable and Ductile and give an example for each.
Malleable: can be pounded on and rolled out in a thin sheet ex: Aluminum foil Ductile: can be pulled into a long, thin wire ex: copper wire
500
What are the 2 most abundant elements in the following categories: Oceans Living Matter Atmosphere Crust
Oceans- Oyxgen (85%) and Hydrogen (10%) Living Matter- Oxygen (65%) and Carbon (18%) Atmosphere- Nitrogen (78%) and Oxygen (21%) Crust- Oxygen (47%) and Silicon (28%)
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