Chapter 1
Physical science is the study of this.
What is nonliving matter and energy.
Atoms consist of three subatomic particles known as what.
An atom loses an electron.
Elements in the same ____ on the periodic table have the same number of valence electrons.
What is column.
To have a full octet, atoms must have this many valence electrons in the outermost energy level.
What is 8
F = ma is an example of this type of scientific model.
What is a scientific law.
Two different elements that are chemically combined form a ______.
What is a compound.
Potassium-39 and potassium-41 always have the same number of this type of subatomic particle.
What are protons.
What is to the right of the heavy stairstep line.
How many atoms are represented by the chemical formula NaOH
What is 3
The SI unit for electric current is known as this.
What is the ampere.
This phase change occurs when liquid becomes a gas.
What is evaporation.
J.J. Thomson discovered the existence of this subatomic particle.
What is the electron.
How many valence electrons do the halogens have?
What is seven.
What is 1:1
An initial, testable explanation that guides an investigation.
What is hypothesis
Grinding coffee beans is known as a (chemical or physical) change.
What is physical change.
Experiments involving these two things led to the discovery of the nucleus.
What are alpha particles and gold foil.
Which element on the periodic table has the largest atomic radius?
What is francium.
What is the name for the covalent compound SF6
What is sulfur hexafluoride
A model that explains a related set of phenomena
What is a theory.
The change of state that results when solids form directly from a vapor is called __
What is deposition.
The law of electrostatic charges states what.
What is opposite charges attract and like charges repel.
The measure of an element's ability to attract and hold electrons when bonded to other atoms is called _______
What is electronegativity
What is ionic bond