3rd 9 Weeks Test. Flashcards
The day-to-day change in temperature and precipitation makes up an areas…?
Climate
What are the 2 major factors that scientists use to classify climates?
Temperature and precipitation.
What did Koppen also consider when classifying climates?
Vegetation
Seasons are caused by…?
The tilt of earths axis.
Which of the following is not one of the major climate regions? A. Tropical rainy B. Dry C. Temperate marine D. Ice cap
Ice cap
Permanently frozen tundra soil is called _____________.
Permafrost
Which of the following is true about the earths axis?
A. It moves to always point towards the sun.
B. It is always stationary.
C. It moves to always point away from the sun.
D. None of the above are true.
B. It is always stationary.
Is the following statement true or false?
A thin tree ring indicates that the year was warm and wet.
False
If a tree ring for a particular year is thick, what can be assumed about the climate?
It was warm and wet.
At what angle is the earth tilted?
23.5 degrees
A well-mixed mixture that contains a solvent and at least one solute is called a ___________.
Solution
Which part of a solution is present in the largest amount.
Solvent.
What is the substance present in a solution in a smaller amount.
Solute
Elements within a group always have the same number of ____________ ___________.
Valence electrons
What is solubility?
A erasure of how much solute can dissolve in a solvent at a given temperature.
The _______________ of an element is the number of protons in the nucleus of an atom.
Atomic #
What is the row of elements across the periodic table called?
A period.
____________ _____________ are those electrons that are held most loosely in an atom.
Valence electrons
A mixture that has so much solute that no more will dissolve is called _______.
Saturated
A ___________ is 2 or more elements that are chemically combined.
Compound
In a solution, the ________ is dissolved by the ___________.
Solute
Solvent
Protons and neutrons of an atom are located in the _________.
Nucleus
The smallest unit of an element that has all the basic properties of and element is called an ________.
Atom
Which part of an atom has no charge?
Neutron.
Which of the following is not a factor that affects the solubility of a substance? A. Pressure B. Temperature C. Type of solvent D. Location
Location
What are the elements in the same column of the periodic table called?
Family
How are elements represented on the periodic table?
Symbols
How is the periodic table organized?
By atomic #
What is the greatest # of valence electrons an atom can have?
8
Matter-
Anything that has mass and takes up space.
Element-
Simplest pure substance that cannot be broken down into any other substance.
Compound-
Pure substance made of 2 or more elements that are combined chemically in a specific ratio.
Mixture-
2 or more substance that are in the same place but not chemically combined.
Atom-
Smallest particle in an atom.
Electron-
Negatively charged particles in an atom.
Nucleus-
Positively charged region in the center of an atom.
Proton-
Positively charged region in the nucleus of an atom.
What is a material that attracts iron and materials that contain iron?
Magnet
Where on a magnet is the magnetic force strongest?
At either the north or South Pole.
In a magnetized material, all or most of the magnetic domains are arranged In The same…?
Direction.
You can destroy a magnet a magnet by…?
Heating it.
Every million years or so, Earths magnetic field has…?
Reversed direction.
The region of earths magnetic field shaped by solar winds is called the ________________.
Magnetosphere.
The area of magnetic force around a magnet is called the magnets _________________________.
Magnetic field.
A group of atoms with their magnetic fields pointing in the same direction is called a ________________________.
Magnetic domain.
A magnet made from material that keeps its magnetism for a long time is called a ___________ magnet.
Permanent.
A glowing region in Earths atmosphere caused be charged particle from the sun is called an _________.
Aurora.
17
?
Chlorine
35
Cl
A--> 3 B--> Li C--> lithium D--> 7 Which letter is the number of neutrons and protons in one atom of lithium.
D
20
Ca
?
40
Calcium
6
C
Carbon
?
12
36 Kr Krypton 84 How many electrons does an atom of krypton have?
36
?
Fe
Iron
56
26
11
?
Sodium
23
Na
20 Ca Calcium 40 How many protons does an atom of calcium have?
20 protons
33 As Arsenic 75 How many neutrons?
42
?
As
Arsenic
75
33
79 Au Gold ? What is the atomic mass of gold if it has 118 neutrons.
197
A--> 3 B--> Li C--> lithium D--> 7 Which letter is the # of protons in one atom of lithium?
A
A--> 3 B--> Li C--> lithium D--> 7 Which letter is the atomic mass?
D
79
Au
Gold
?
197
