Intro to chem
Were is the proton located
The nucleus
How many valence electrons does carbon (C) have?
4 valence electrons
What are valence electrons, and why are they important in chemical bonding?
Electrons that participate in forming bonds with other atoms, essentially determining how an atom will react and interact with other elements to create compounds.
Who was the creator of the Periodic Table
Dmitri Mendeleev
what is the chemical symbol for potassium?
K
Who proposed that all matter is made up of
tiny particles.
John Dalton
Based on their electron configurations, which element is more likely to gain electrons: chlorine or sodium?
Chlorine is more likely to gain electrons than sodium
What is the chemical symbol for potassium?
K
What is the group number of the element with the symbol Na
Group 1
What is the chemical symbol for gold
Au
What are the three types of radiation
alpha (α), beta (β), & gamma (γ)
What is an isotope, and how are isotopes of the same element different?
An atom of a specific element that has the same number of protons (atomic number) but a different number of neutrons, resulting in a different atomic mass compared to other atoms of the same element
How many protons, electrons, and neutrons are present in a neutral atom of oxygen?
8 protons, 8 electrons, and 8 neutrons
What are the three subatomic particles that make up an atom, and what are their charges?
The three subatomic particles that make up an atom are protons (positive charge), neutrons (no charge), and electrons (negative charge
What are the signs that a chemical reaction has occurred?
A change in color, formation of a gas (bubbles), formation of a precipitate (solid forming in a solution), change in temperature, a noticeable odor change, and sometimes the production of light
What is located at the center of an atom
Atomic nucleus
painting a picture
physical change
H20
How is the atomic number of an element determined, and what does it represent?
Counting the number of protons in the nucleus of an atom of that element
What's the name of the distance light travels in one cycle?
Wavelenght
explain the difference between physical and chemical change.
A physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and now changing back to the way it was before.
Gas that makes up 78 percent of the Earths atmosphere
Nitrogen
How do you calculate the mass number of an atom?
Formula: Mass Number = Protons + Neutrons