Biology Quiz Flashcards
mass
a measurement of the amount of matter in an object
Matter
anything that has mass and takes up space
The simplest form of a substance that cannot be ______ apart and still have the properties of that element.
Broken goes in blank and answer is Element
Chonps stands for the most common elements. They are…
-Carbon
-Hydrogen
-Oxygen
-Nitrogen
-Phosphorus
-Sulfur
The smallest unit of matter that has chemical properties because it consists of all subatomic parts is…
Atom
Atoms still ________ their original properties of that element because the subatomic parts are all present.
maintain
Protons
-Positively charged
-located in atoms nucleus
-number of protons never changes in different elements.
Neutron
-Neutral charge
-in nucleus of atom
-number of them can change with different elements
Electrons
-negatively charged
-in electron cloud
-number of electrons can change
-# of electrons is the same as # of protons.
Atoms with different number of electrons are called…
ions
Two or more elements bonded together is…
compound
covalent bond
bonds between 2 non-metals
-strongest chemical bond
-results from sharing electrons to fill outer electron shell
Polar molecules
-unequal sharing of electrons, which creates unequal charges on each sides of an element.
Non-Polar molecules
-Equal sharing of molecules which creates noc harge on an element
Ionic bonds…
bonds between metal and non-metals. Created by gaining or losing electrons.
When dissolved in ______ ions are created
water
Cations
ions that possess a positive charge; it has more protons than electrons because the atom loses electrons
Anions
ions that possess a negative charge; it has more electrons that protons because the atom gains electrons.
fairly weak bonds-formed from polar covalent compounds that have a partially positive hydrogen attracted to a partially negative “substance”-usually oxygen
Hydrogen bonds
These bonds are responsible for many of water’s properties
hydrogen bonds
On Water Hydrogen is _______ and Oxygen is __________
positive, negative
Sold lines=
Dotted lines=
covalent
hydrogen
