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States of Matter
Properties of Matter
Changes
Anions or - Charges
Miscellaneous
100
Name four states of matter we have discussed in class.
gas, liquid, solid, and plasma
100
Define a physical property
It is any property which describes a substance without discussing chemical reactions
100
Which of the following is an example of a physical change? A. Rusting of metal B. Breaking a vase C. Burning a piece of toast D. All of the above
B. Breaking a vase
100
Which mineral(s) has/have a charge of -2 and only one element?
Oxides and sulfides
100
How many atoms of each element does Fool's gold have?
One atom of iron and two atoms of sulfur
200
How does the spacing between atoms in the solid state different from spacing between atoms in the gas state.
Atoms in the solid state are spaced more closely
200
Define a chemical property.
Chemical properties describe something about the reactions a substance experiences.
200
Give an example of a chemical change involving one of these minerals - carbonates, silicates, or sulfates.
When an acid is added to a carbonate, a gas is formed.
200
Which mineral(s) has/have a charge of -3 and how many atoms does it have total?
Phosphate
200
A ruby is an example of a corundum mineral. Which element is responsible for the red color of a ruby?
Chromium
300
When a gas goes to the liquid the state, the process is known as
condensation
300
Luster (the shininess of a metal) is a
physical property
300
Identify the following as either a physical or a chemical change and explain your reasoning. Apple slices on a plate stays at room temperature for 30 minutes.
An apple slice sitting out one the counter is a chemical change because the oxygen reacts with the apple slice to turn it brown, which changes the substance.
300
Which mineral(s) has/have a charge of -1 and which element(s) can this/these mineral(s) have?
Halite, with the elements fluorine and chlorine.
300
Which would you expect to have a higher melting point - a sulfide or a halite with a chloride anion? Explain.
A sulfide because it has a -2 charge and a halite has a -1 charge.
400
When a solid goes from a solid to a gas state, the process is called
sublimation
400
Tim has 2 identical wooden blocks and two different liquids, liquid A and liquid B. He placed one of the wooden blocks into liquid A and the other wooden block into liquid B. He observed that the wooden block in liquid A sank while the wooden block in liquid B floated. What can he infer about the densities of liquids A and B?
The blocks were identical, so their densities were exactly the same. Since the block sank in liquid A but floated in liquid B, Tim can infer that liquid A is less dense than liquid B (or liquid B is more dense than liquid A).
400
When ions in the magma join together to form a silicate mineral, what kind of change has occurred in the magma? Explain your reasoning.
A chemical change has occurred within the magma because the content of ions have changed within the magma.
400
Give three examples of a mineral with an anion with total charge of -2 and 4 atoms within the anion.
Dolomite, calcite, and anhydrite
400
Which type of mineral has a higher melting point, an oxide or a sulfide and why?
An oxide because it has fewer shells than a sulfide ion, making the oxide smaller. If two ions have the same charge and one of them is smaller, it usually results in a higher melting point.
500
Name a substance which undergoes sublimation at room temperature
dry ice
500
Give one example of an intensive property.
Multiple answers are possible and can include density, temperature, viscocity, etc. It can't depend on how much of the sample there is
500
What kind of change is occurring when dry ice sublimes?
A physical change is occurring because sublimation (phase change from solid to gas) is only a change in the state of matter, and the substance remains the same.
500
Which anion does corundum, magnetite, and hematite contain?
An oxide
500
What gas is released when a carbonate reacts with an acid?
Carbon dioxide