Show:
Scientific Method
Atoms & Molecules
Measuring Matter
States of Matter
Minerals and Rocks
100
Which variable in an experiment is purposely changed by the scientist?
The independent variable
100
What are the charges for the following subatomic particles? Proton Neutron Electron
Proton =Positive Neutron = Neutral Electron = Negative
100
What is the tool used to measure mass?
A balance
100
Does a substance gain thermal energy in an endothermic or exothermic reaction?
Endothermic
100
Why is brick NOT considered a mineral?
Brick is not naturally occurring.
200
You run an experiment to see if a substance can affect how quickly a sliced apple turns brown. You use slices from the same apple of the same size in your experiment. You put one slice in water, one slice in lemon juice, one slice in honey, and one slice is left in the open. You measure how brown each slice is every 6 hours. What is dependent variable in the experiment?
How brown the apple slices become
200
What is the major difference between an element and a compound?
An element has one type of atom, a compound has more than type of atom chemically combined.
200
Two pieces of the same substance will have the same ______________.
Density
200
As the temperature of a substance rises, what happens to movement and spacing of the particles?
The particles move faster and spread out
200
What properties makes gemstones so appealing and valuable?
Their brilliant luster, high hardness, and varied colors.
300
You run an experiment to see if a substance can affect how quickly a sliced apple turns brown. You use slices from the same apple of the same size in your experiment. You put one slice in water, one slice in lemon juice, one slice in honey, and one slice is left in the open. You measure how brown each slice is every 6 hours. What is the control group in the experiment?
The apple slice left out in the open
300
Which of the following are examples of compounds? Ne, OH, H2O, Co, O and Fe, two types of atoms chemically combined, two types of atoms physically combined
H2O, OH, Two types of atoms chemically combined
300
I have a piece of material with a mass of 96g and a volume of 16 cm3. What is the material’s density?
6 g/cm3
300
Which state of matter has the most kinetic energy?
Gas
300
What is the a solid that contains a mixture of minerals and other substances?
Rock
400
You run an experiment to see if a substance can affect how quickly a sliced apple turns brown. You use slices from the same apple of the same size in your experiment. You put one slice in water, one slice in lemon juice, one slice in honey, and one slice is left in the open. You measure how brown each slice is every 6 hours. What are the independent and dependent variables in this experiment?
Independent: The substance the apple is in Dependent: How brown the apple slice becomes
400
Name one similarity and one difference between compounds and mixtures.
Similarity: both involve more than one type of atom Difference: mixtures are physically combined and compounds and chemically combined
400
Sort the following terms into size dependent and size independent properties: Mass, Volume, Color, Density, Weight, Melting Point
Size Dependent: Mass, Volume, Weight Size Independent: Color, Density, Melting Point
400
When liquid water freezes into ice, does a new substance form? Why or why not?
No, because they are the same atoms, just in a different state of matter.
400
Using the mineral property chart in your study guide, what would the following mineral be? Color: Clear Luster: Glassy Solubility: In Acid Other: Double Refractive
Calcite
500
You run an experiment to see if a substance can affect how quickly a sliced apple turns brown. You use slices from the same apple of the same size in your experiment. You put one slice in water, one slice in lemon juice, one slice in honey, and one slice is left in the open. You measure how brown each slice is every 6 hours. What are three variables that you would want to be controlled in this experiment?
The type of apple used, the size of the apple slice, how much liquid is used, how long the slices are left in the liquid, etc
500
Draw a model of the compound CCl4
(see drawing on board)
500
Explain the steps necessary for finding the volume of an irregular shaped object.
1. Fill a graduated cylinder to an initial water level. 2. Gently slide the object into the graduated cylinder. 3. Read the final water level. 4. Subtract the initial water level from the final water level to find the volume of the object.
500
Explain what happens to particle speed, particle spacing, and thermal energy as water boils.
Particles speed up, spread apart, and thermal energy is increased
500
Using the mineral property chart in your study guide, what would the two best tests be to tell the difference between pyrite and pyrrhotite?
Hardness and solubility in acid