Definitions 1
What has mass and volume that gives its density.
matter
What is the nucleus composed of in an atom?
protons and neutrons
What is the atomic number?
The number of protons in an atom.
How do you find the atomic charge?
Subtract the number of protons and the number of electrons.
What elements are fairly stable, ductile, malleable, and conduct electricity and heat?
transition metals
What is the simplest type of pure substance?
an element
Which part of the atom is positively charged?
protons
What is the atomic mass?
The number of protons and neutrons added together.
What are the elements called that have atoms with a complete outer shell of electrons and do not react?
Noble gasses
This part of the periodic table has the same number of electrons in the last orbital and act similar when reacting.
family or group (the columns)
What is the inside section of an atom?
nucleus
What part of the atom has no charge (neutral)?
neutrons
What do you get when you change the number of electrons?
a different ion
What elements have 1 or 2 electrons in the out shell and want to lose one or two of those electrons-- VERY reactive?
metals
This part of the periodic table has the same number of orbitals.
period (rows)
What is the smallest piece of an element?
an atom
What part of the atom is negatively charged and orbits the nucleus?
electrons
What do you get when you change the number of protons?
a different element
What elements have 6 or 7 electrons in the outer shell and want to gain an electron or two--VERY reactive?
A. Which bond is a nonmetal taking an electron from a metal?
B. Which bond are two nonmetals that share valence electrons?
A. ionic
B. covalent
A. What substance is made by putting together other substances with no set ratios and not chemically combined?
B. What is a homogeneous mixture composed of two or more substances?
A. mixture
B. Solution
What are the shells around the nucleus called?
orbitals
What do you get when you change the number of neutrons?
a different isotope
What elements have the properties of both metals and non-metals and are used as semiconductor computer chips?
metalloids
A. What is a pure substance that is made of 2 or more elements chemically combined?
B. What is the smallest piece of a compound?
A. Compound
B. Molecule