Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Atom:
|
The smallest particle of an element that can be identified with that element. Consists of protons and neutrons in a nucleus surrounded my electrons.
|
|
|
Brownian motion:
|
Random movement observed among microscopic particles suspended in a fluid medium
|
|
|
Compound:
|
A chemical substance made of atoms of two or more different elements combined in a fixed proportion
|
|
|
Chemical Formula:
|
A description that uses numbers and symbols of elements to describe the proportion of elements in a compound or reaction.
|
|
|
Element:
|
A substance made of only one kind of atoms. Examples of elements are carbok, hydrogen, oxygen
|
|
|
Group:
|
Elements in the same column of the periodic table
|
|
|
Molecule:
|
Two or more atoms of the same or different elements bonded to form a larger particle
|
|
|
Periodic Table:
|
A chart that lists elements by atomic number and by electron arrangements, so that elements with similar chemical properties can be found in the same column.
|
|
|
Proton:
|
A positively charged particle that is one of the two kids on particles found in a nucleus of an atom
|
|
|
Plasma:
|
A fourth phase of matter, in addition to solid, liquid, and gas. In the plasma phase, which exists mainly at high temperature, matter consists of positively charged ions and free electrons.
|
|
|
Nucleus:
|
The positively charged center of an atom, which contains protons and neutrons and has almost all he mass of the entire atom but only a tiny fraction of the volume.
|
|
|
Atomic Number:
|
Number of protons in the nucleus of an atom
|
|
|
Nucleon:
|
The principal building block of the nucleus; a neutron or a proton
|
|
|
Isotope:
|
A form of an element having a particular number of neutrons in the nuclei of its atoms. Different isotopes of a particular element have the same atomic number but different atomic mass numbers.
|
|
|
Ion:
|
An atom or groups of atoms bound together with a net electric charge, which is due to the loss or gain of electrons
|
