Bio chapter 2-Atoms
What holds atoms in compounds together
Chemical bounds
Atom that loses electrons has a negative charge True or False
False
True or false When atoms share two electrons, it is called a double bond.
False
What are atoms of the same element that differ in the number of neutrons they have
Isotopes
Electron charge/location
Negative Orbit around nucleus
Neutron charge/location
Neutral Nucleus
Proton charge/location
Positive Nucleus
What does the atomic number represent
amount of protons in the atom of an element. It also shows the amount of electrons because protons and electrons are equal
basic unit of matter
atom
Why are atoms neutral despite having charged particles
atoms have the same amount of electrons and protons. They can only become positive if they add or take aways protons or electrons
What is a chemical element
element that cannot be broken down or changed into another substance using chemical means
How are isotopes identified
mass number and total number of protons and neutrons in the nucleus
The structure that results when atoms are joined together by covalent bonds is called
molecule
what is the nucleus of an atom made of
neutrons with neutral charge
How are ionic bond
An atom want to either get rid of or gain an electron and another atom wants or has what they need, so they "trade" their electrons.
What does the formula for table salt indicate about that compound
the elements from where table salt is formed, from sodium and chlorine is always combined with one sodium and one chlorine Formula:NaCl
Why do all isotopes of an element have the same chemical properties
they all have the same number of electrons as that atom of that element.
True or False Atoms can share six electrons and form a triple bond.
True
True or False In a water molecule, each hydrogen atom forms a single covalent bond.
True
Slight attractions that develop between oppositely charged regions of nearby molecules are called
Van der Waalse Forces
How are covalent bond formed
When 2 atoms both need or want to get rid of electrons but it uses too much energy so they share their electrons
What is an ion
When an atom loses or gain an electron so it is positively or negatively charged.
