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chapter 3 ww

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Scientists at the time thought that all matter was composed of what four substances   earth, watr, air, and fire  
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4 basic essences   wet, dry, hot, and cold  
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greek word for atom   indivisible  
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How many elements have been identified   112  
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The physical combination of one type atom with another was visualized as being...   eye-and-hook affair  
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His work resulted in the first periodic tble of the elements   Mendeleev  
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How many groups are in the periodic table   Eight  
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the only difference between atoms of another was their   mass  
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another word for cathode rays   electrons  
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the number of electrons was thought to equal the quantity of positive electrification because the atom was known to be electrically   neutral  
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The smallest subdivision of electromagnetic radiation is an indivdual packet of energy called a   photon or quantum  
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The alteration of the speed of visible light when it encounters transparent matterof varying densities is termed   refraction  
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the number of protons determines the   chemical element  
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with the develpment of high-energy particle accelerator, or ________ ________ as some call them, the structure of the atomic nucleus is slowly being mapped and identified   particle accelerators  
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The 3 primary constituents of an atom or also called the fundamental particles   electon, protons, and neutrons  
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The _______ of electrons around the nucleus determines the manner in hich atoms interact.   arrangement  
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Because an atomic particle is extremely small, its mass is expressed in   atomic mass units (amu)  
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atoms that have the same number of protons but differ in the number of neutrons are   isotopes  
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the number of ______ ultimately determines the chemical behavior of an at    
🗑
Scientists at the time thought that all matter was composed of what four substances   earth, watr, air, and fire  
🗑
4 basic essences   wet, dry, hot, and cold  
🗑
greek word for atom   indivisible  
🗑
How many elements have been identified   112  
🗑
The physical combination of one type atom with another was visualized as being...   eye-and-hook affair  
🗑
His work resulted in the first periodic tble of the elements   Mendeleev  
🗑
How many groups are in the periodic table   Eight  
🗑
the only difference between atoms of another was their   mass  
🗑
another word for cathode rays   electrons  
🗑
the number of electrons was thought to equal the quantity of positive electrification because the atom was known to be electrically   neutral  
🗑
The smallest subdivision of electromagnetic radiation is an indivdual packet of energy called a   photon or quantum  
🗑
The alteration of the speed of visible light when it encounters transparent matterof varying densities is termed   refraction  
🗑
the number of protons determines the   chemical element  
🗑
with the develpment of high-energy particle accelerator, or ________ ________ as some call them, the structure of the atomic nucleus is slowly being mapped and identified   particle accelerators  
🗑
The 3 primary constituents of an atom or also called the fundamental particles   electon, protons, and neutrons  
🗑
The _______ of electrons around the nucleus determines the manner in hich atoms interact.   arrangement  
🗑
Because an atomic particle is extremely small, its mass is expressed in   atomic mass units (amu)  
🗑
atoms that have the same number of protons but differ in the number of neutrons are   isotopes  
🗑
the number of ______ ultimately determines the chemical behavior of an atom   proton  
🗑
the electrical charge of an atom is   zero  
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in their normal state, atoms are electrically ______. (positive, negative, neutral)   neutral  
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Equation of maximum electrons per shell   2n2  
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the force that keeps an electon in orbit is the   centripetal force  
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emission of particles and energy in order to become stable   radioactivity  
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another name for x-rays and gamma rays   photons  
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Type of radiation including electrons, protons, and even rare neclear fragments if they are in motion and possess sufficient kinetic energy   particulate  
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Who developed the concept of the atom as a miniature solar sysem   niels bohr  
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Atoms of various elements may combine to forms these structures   molecules  
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