4.1
An Atom is what?
An atom is the smallest particle of an element.
Isotopes are atoms of the same element with different numbers of what?
neutrons.
The 18 vertical columns of the periodic table are known as
Groups
An atom’s atomic number is 79. Who am I?
Gold.
Electrons have this charge
Negative
What does Na stand for?
Sodium
What is atomic mass
Number of protons and neutrons
Physical properties of matter include?
name 2
shininess, malleability, ductility, and conductivity.
What is an Element?
A substance composed of a single KIND of an atom.
Who is the creator of the periodic table?
Dmitri Mendeleev
What does Ne stand for?
neon
What natural element is in every living thing?
Carbon
The 7 horizontal rows of the periodic table are called what?
Periods
Is gold reactive?
No
What is a compound?
A substance in which two or more different elements are chemically bonded.
Protons have this charge
Positive
What does C stand for?
Carbon
Because atoms are so small, studying them can be what?
A challenge for scientists
What are the 3 parts of an atom
Protons, electrons, and neutrons
What is Corrosion
Corrosion is the destruction of metal as it reacts with another substance.
What is a Mixture?
Two or more substances that are mixed together but are not chemically bonded.
What does the Atomic Number represent?
The number of Electrons and Protons located in a specific element.
What does Fe stand for?
Iron
Electrons are the small, negatively charged particles found around where?
The outside of an atom.
A chemical symbol is either one or two letters that represent what?
The element
Alkali Metals are what?
First group of the periodic table
Shiny and soft when pure
Only found naturally in compounds
Simplest and smallest of atoms, but makes up 90% of the atoms in the universe. What am I?
Hydrogen
Does Gamma Radiation have a charge?
Gamma radiation has no charge and consists of high-energy waves similar to X-rays.
What does Ag stand for?
Silver