Chemistry 1
The atomic number tells us
What is the number of protons and electrons?
atoms of the same elements with different number of neutrons
What are Isotopes?
the fourth and rarest form of matter
what is plasma?
There are this number of elements on the periodic table
What is 118?
The visible spectrum has a wavelength from _____ nm to ______ nm.
what is 400 to 700 nm?
a negatively charged ion
what is an anion?
What term refers to anything that has mass and occupies space
What is Matter
the particle that make up light
what is a photon?
Chemical name for salt
What is sodium chloride?
electron in the outermost energy level
what is valence electron?
they tend to look like metals and behave like nonmetals
What are metalloids?
The four most abundant elements in the human body
What is oxygen, carbon, hydrogen and nitrogen?
wavelength of red color
what is 700 nm?
by losing or gaining valence electrons
amount of groups/families in the periodic table
what is 18?
What is Molecule
When two or more atoms are joined together chemically
state the electron configuration of Hydrogen
what is 1s1?
what is an element?
Protons and neutrons
the symbols of energy sublevels
maximum number of electrons in each sublevel of energy
what is s2, p6, d10, f14?
how many energy levels can an atom have?
what is 7?
This group of elements can be found on the right side of the periodic table of the elements
What are Noble gasses?
elements in the same period have this in common?
what are the same number of orbitals/shells?
the color of a molecule of oxygen
What is red?