The Guys behind it all
The number of protons in an atom of an element is its
What is : atomic number
Neutron is _______ charged
What is : uncharged/ neutral
What two particles make up the net charge of an atom nucleus?
What is : protons and electrons
This variable is also known as the manipulated variable in a hypothesis.
Independent variable
What structure did Rutherford discover was in an atom after his gold foil experiment?
What is : A nucleus
The positively charged particle
What is : A proton
Electrons are _____ charged.
What is : negatively
What particle lives in the rings in the Bohr diagram?
electrons
An educated guess in an experiment
hypothesis
What particle did J.J. Thomson discover?
What is : electron
The total volume of an atom is localized in what part of the atom?
What is : nucleus
An area where an electron is predicted to be at any one time.
What is : orbital
A (n) _____ is a very small particle that is the basic unit of matter.
What is atom
Last part of a lab report that includes a short summary
conclusion
The plums in Thomson's plum-pudding model of the atom represent:
What is :electrons
In an atom, which has the least mass? A: nucleus B: proton C: neutron D: electron
What is : electron
Trends of the characteristics of elements across the periodic table.
What is : periodicity
Electrons in an atom move throughout the _____ surrounding the nucleus.
shells
The effect of hydrogen peroxide on texture of meat. What is the dependent variable?
texture of meat
What did Bohr, Democritus, Thomson, Dalton, and Rutherford all have in common? A: They each identified the electromagnetic force of atoms B: They each identified new electron clouds C: They each developed ideas about atoms D: They each conducted experiments with ions
What is : C: They each developed ideas about atoms
Describe the difference between atomic number and mass number *Multiple sentence answer*
What is : The atomic number is the number of proton in an atom. The Mass number is the sum of the number of protons and neutrons in an atom of a particular isotope
The most dense structure in an atom called _______ is made up of ______ and ______.
What is : nucleus, protons, and neutrons
An atom is electrically neutral because
the numbers of protons and electrons are equal.
The correct order of the scientific method is____________.
Ask questions, make a hypothesis, test the hypothesis, analyze results, draw conclusions, communicate results.