A
Building blocks of matter.
Atom
How many types of atoms are elements made of?
One
Two or more of the same atoms linked together forms a ____.
Molecules
A combination of atoms from different elements creates a ______.
Compound
What is used to organize elements?
Periodic table
An SI unit used to measure the amount of any substance.
mole
One mole of a substance is equal to _______ units of that substance.
6.022 × 10²³ (Avogadro's number)
Three subatomic particles of atoms.
Protons, neutrons, electrons
Protons, neutrons, and electrons have different ____.
Charge
Where are the protons, neutrons, and electrons located within an atom?
Protons and neutrons are in the nucleus. Electrons are in a cloudlike region outside of the nucleus.
What does the atomic number of an element tell you?
How many protons or electrons are in an atom of that element.
Yes or No. The mass of an atom in atomic mass units is the total number of protons and electrons in the atom.
NO!
This element was historically known by the Latin term "plumbum" and is used in pipes and batteries.
Lead
Which organization developed a systematic method of naming chemical compounds?
International Union of Pure and Applied Chemistry (IUPAC)
Who discovered electrons?
J.J. Thompson
Who discovered protons?
Ernest Rutherford
Atoms of the same element with different masses.
Isotopes
Positively charged ions
Cations
Negatively charged ions
Anions
Electrons
Compounds formed between metals and non-metals.
Ionic compounds
This chemical bond involves the sharing of electron pairs between atoms.
Covalent bond
NaCl
What element, known for its use in lightbulbs, has the chemical symbol "W"?
Tungsten
This reaction between an acid and a base produces salt and water.
Neutralization Reaction