Earth 1
The remains of a once-living organism preserved in rock.
What is a fossil?
Type of rock that is best to find fossils within.
What is sedimentary rock?
These are the 3 subatomic particles in an atom.
What are protons, neutrons, & electrons?
Elements on the periodic table are positioned by this.
What is the atomic number (number of protons)?
This means change over time.
What is evolution?
These 2 levels of classification are used for the scientific name of organisms.
What are genus & species?
Imprints of the shells of ocean creatures found in the rocks of the Appalachian Mountains most likely indicates this.
What is that the mountains were once under the ocean?
This is how elements are similar to those in the same group on the periodic table.
What is they have the same number of valence electrons?
These are physical properties of all elements in the rightmost group of the periodic table.
What are gases at room temperature?
This would be the mass of the product after chemically combining 4g of hydrogen with 2g of oxygen.
What is 6g?
Intrusions are this compared to the layers they cut across.
What is younger than the layers they cut across?
This type of fossil can be used to help determine the age of the rock layer in which the fossils are found.
What are index fossils?
This is represented by this equation:
2Mg + O2 ---> 2MgO
What is the law of conservation of mass?
This best describes the properties of an element from group 1.
What is a highly reactive metal?
This is where the most reactive nonmetals are located on the periodic table.
What is group 17 (halogens)?
Which of 2 fossils is older can be determined using this dating method(s).
What are relative & absolute dating combined?
This is the law that states that older layers of earth are found beneath younger layers.
What is the law of superposition?
This shows how to balance this equation:
H2 + O2 ---> H2O
What is:
2H2 + O2 ---> 2H2O (?)
The ability to conduct electricity under certain conditions is a property of these.
What are metalloids?
This characteristic best helps scientists classify organisms.
What is structure?
This would be a way a paleontologist could prove that a fossil & a modern plant are related.
What is compare the structures of the fossil to that of modern plants?
This era was known as the age of mammals.
What is the cenozoic era?
This must occur when a substance goes through a chemical change.
What is the formation of a new substance?
When chemicals react in a closed container, this must be true.
What is that the mass both before and after the reaction is the same?
This is the advantage of a plant being able to reproduce sexually & asexually.
What is allowing the plant to adapt to new conditions?