Shared Flashcard Set

Details

Quarter 1
Review Questions
25
Chemistry
9th Grade
10/24/2013

Additional Chemistry Flashcards

 


 

Cards

Term
Atom
Definition
A (an) is the basic unit of matter.
Term
Neutron
Definition
Particle in the nucleus of an atom that has zero charge.
Term
Electron
Definition
Particle in the nucleus of an atom that has a negative charge.
Term
Proton
Definition
Particle in the nucleus of an atom that has positive charge.
Term
Protons + Neutrons
Definition
The mass number of an individual isotope.
Term
Atomic Number
Definition
The number of protons in an element is also the ___________ ______ of the element.
Term
The electromagnetic
Definition
The __________ force holds the
electron(s)in the atom.
Term
Radioactivity
Definition
the spontaneous decay of an atom into another isotope of the same or different element.
Term
Alpha and Beta particle and Gamma radiation
Definition
The three types of radioactive decay.
Term
Chemistry
Definition
The central science, the study of matter.
Term
The proton
Definition
An atom's identity comes from which subatomic particle?
Term
Dmitri Mendeleev
Definition
The first periodic table was developed by...
Term
The outmost electrons
Definition
Valence electrons are...
Term
Hypothesis
Definition
In the scientific method, an investigation uses methods of control to test a(an) ...
Term
Physical
Definition
Is density a chemical of physical property of matter?
Term
Chemical
Definition
Baking cookies is a __________change.
Term
Physical
Definition
Breaking glass is a __________change.
Term
Conclusion
Definition
What is the last step of the scientific method?
Term
D = m / V
Definition
The formula for density
Term
Sublimation
Definition
What is the phase change called from solid to gas?
Term
Mass cannot be created or destroyed
Definition
What is the Law of Conservation of Mass?
Term
Solid, liquid, gas, and plasma
Definition
What are the four states of matter?
Term
Periodic Table
Definition
Organized table of elements by atomic number.
Term
Isotope
Definition
Elements with the same number of protons but different numbers of neutrons
Term
Half-life
Definition
The decay rate used for radioactive substances
Supporting users have an ad free experience!