Show:
Hydrogen bonding
ICE Density
Chemistry
Heat capacity
Adhesion
100
What is hydrogen bonding
A hydrogen bond is the electrostatic attraction between polar molecules that occurs when a hydrogen atom bound to a highly electronegative atom such as nitrogen , oxygen or fluorine experiences attraction to some other nearby highly electronegative atom.
100
What is Ice density
As the temperature decreases, the density increases as the molecules become more closely packed.
100
what is chemistry
the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
100
What is heat capacity
the number of heat units needed to raise the temperature of a body by one degree.
100
What is adhesion
the action or process of adhering to a surface or object.
200
how hydrogen bonds form a water molecule
up to four
200
If the density of water is 999.97 kg, then what is the density of ice
0.9340 g
200
what country did chemistry originated from
it originated from Greece
200
who discovered specific heat capacity
Louis Dulong and Alexis-Thérèse Petit
200
In what century was adhesion discovered
in the 1900's
300
Does a hydrogen bonds have a negative charge
yes
300
Is ice less dense than water
Yes cause ice floats
300
who is the father of modern chemistry
Antoine Lavoisier
300
how would you measure heat capacity
Use the heating element to transfer a known amount of heat to the calorimeter system. Observe the temperature of the system before and after the heating process. Calculate the change in temperature for the system. Calculate the heat capacity of the entire calorimeter system.
300
Which of the following makes water stick to paper cohesion or adhesion.
both of them do
400
Does hydrogen bonding only occur between water molecules
no
400
does the density change when water freezes
yes it does it decrease by 9%
400
who established the first periodic table
Dmitrii Mendeleev
400
What is the SI unit for heat
joule
400
what is the difference between cohesion and adhesion
what is the difference between cohesion and adhesion
500
who discovered hydrogen bonds
T. S. Moore and T. F. Winmill
500
how do you determine the density of ice
Calculate the volume of the ice cube by subtracting the original volume of water in the cylinder from the volume of the water and ice
500
What are two types of cells
prokaryotic and eukaryota
500
what is the heat capacity of water
what is the heat capacity of water
500
What are adhesion forces for
Adhesive forces are the attractive forces between unlike molecules.