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Pre-Test
Isotopes
Subatomic
Numbers
Modern Theory
100
The measurable result often located on the y-axis.
What is the dependent variable?
100
Isotopes are formed when atoms gain or lose these.
What are neutrons?
100
The three subatomic particles.
What are protons, neutrons, and electrons?
100
Then maximum number of electrons that can be placed in the second shell of a Bohr model.
What is 8?
100
The smallest particle of an element that retains all the properties of that element.
What is an atom?
200
Solids, Liquid and Gases?
What are the three states of matter!
200
The number of neutrons found in a carbon atom with a mass number of 12 and an atomic number of 6.
What is 6?
200
Subatomic particle that never changes and identifies the element.
What is a proton?
200
The number of neutral particles in Cu-65.
What is 36?
200
The one or two letters assigned to each element.
What is the chemical symbol?
300
DOUBLE JEOPARDY Decompose, Explode, Rust, Oxidize, Corrode, Tarnish
What are examples of chemical change?
300
By the mass number or the number of neutrons
How do isotopes differ?
300
The number of electrons in an atom with 18 protons.
What is 18?
300
The number of protons in an atom of Tungsten.
What is 74?
300
Electrons in the outter most energy shell.
What are valence electrons?
400
Elements and compounds but NOT mixtures?
What are pure substances?
400
The loss of half of a given mass after a specific period of time.
What is nuclear decay or half-life?
400
An atom of an element with 66 electrons
What is Dysprosium?
400
The number of neutrons in Bromine-80
What is 45?
400
The region of space around the nucleus where an electron is likely to be found.
What is an orbital or shell or cloud?
500
The density of a sample that has a mass of 20g and a volume of 4ml.
What is 5 g/ml?
500
The number of neutrons in Bismuth-211.
What is 128?
500
DOUBLE JEOPARDY The positively charged protons cancel out the negatively charged electrons
What is why an atom has no net charge?
500
118
What is the number of known elements on the periodic table?
500
A pure substance that cannot be broken down into simpler substances by physical or chemical means.
What is an element?