Atoms
What 3 particles make up an atom?
protons, neutrons, electrons
This type of bond involves two or more atoms sharing electrons.
Covalent Bond
A water molecule consists of one ____________ atom and two _______________ atoms.
oxygen, hydrogen
A paper clip or steel needle can sometimes rest on the surface of water without immediately sinking. What property of water is this?
Surface Tension
Anything that has mass and takes up space is called_________________
Matter
This subatomic particle has a positive charge
proton
Ionic Bond
Water molecules do not share electrons equally meaning they are _______________ molecules
Polar
What property of water happens when water "sticks to itself"?
Cohesion
An element with an atomic number of 10 has how many protons?
10
How many electrons can fit in the second electron shell?
8
This type of bond forms when atoms share electrons unequally.
Polar Covalent Bond
Which part of the water molecule is positive and which part is negative?
oxygen = negative, hydrogen = positive
This property of water prevents lakes from freezing over and fish from dying.
Density.
An element with an atomic number of 8 and a mass number of 17 has how many neutrons?
9
Neutral atoms have an equal number of ____________ and ______________
protons and electrons
This type of bond forms between the hydrogen atom of one water molecule and the oxygen atom of another water molecule.
Hydrogen Bond
How many electrons does each hydrogen share with oxygen?
1 each.
This property of water allows it to dissolve substances that have a charge.
Solvency or polarity
If an element has 7 protons and 8 neutrons, how many electrons does it have?
7
What is the name of an atom that loses electrons one or more electrons to develop a positive charge?
Cation
This type of bond holds a water molecule together.
Polar Covalent Bond.
How do water molecules behave when salt is added to water.
They surround the positive and negative ions and separate them.
Which property helps water move from plant roots toward the tops of plants?
capillary action / cohesion & adhesion
Atomic number, Mass number, Atomic Symbol, Element Name