1
What are 2 elements found in the halogen family?
Fluorine, Chlorine, Bromine, Iodine, Astatine, Tennessine.
What is the name of Nh?
Nihonium
What is an Acid?
A. HCl
B. H2O
C. CO2
D. Ba2
The answer is A. HCl
What year was the periodic table invented?
A. 1900
B. 1687
C. 1869
D. 1845
What is C. 1869?
What is the atomic symbol for Francium?
A. Lr
B. FR
C. Cs
D. Fr
The correct answer is D. Fr
What is cohesion?
When water sticks to itself. (water ONLY sticks to water)
The _____________ _____________ organizes the elements according to their physical and chemical ____________.
1. Periodic table
2. Properties
What liquid is a base?
A. lemon juice
B. Orange juice
C. Sugar
D. Water
The correct answer is D. Water
What caused the water spill over the penny?
The water was no longer able to continue sticking to one another and as soon as a drop of water touched the table adhesion occurred.
What is the atomic mass of mercury?
The atomic mass is 200.54
What is an acid?
They give up hydrogen ions, and have a pH lower than 7.
What does the atomic number represent?
The atomic number represents the number of protons in an atom and electrons.
What family is Nh found in?
The Boron family.
What is the difference between cohesion and adhesion?
Adhesion is when water likes to stick to any other substance other than water while cohesion is when water only likes to stick to itself.
What is the difference between a heterogeneous and heterozygous mixture?
A heterogeneous is similar things mixed together (uniform composition) while a heterozygous does not dissolve completely and is not uniform.
Some metals, like platinum and cobalt form ________ in more than one way. In other words, they have a(n) _____ _______.
FILL IN THE BLANK.
1. Ion
2. Ion charge
What term describes the chemical process that occurs in cells to release energy?
A. oxidation
B. cellular respiration
C. Perspiration
D. Evaporation
The correct answer is B. Cellular respiration.
What is a base?
They accept hydrogen ions and have a pH higher than 7.
How many elements are there in the periodic table?
A chemical process is ...
The transformation of a material/ substance from one to another. It is no longer the same thing chemically.
The penny was able to hold that many drops of water because it kept sticking to each other, stacking on top of each other = cohesion.
What is the difference between the actinide series and the lanthanide series?
Actinides are more reactive than lanthanide series.
What is the difference between an element, mixtures, and compounds?
An element is a pure substance.
A mixture can be physically separated.
A compound is chemically combined.
When a compound of sodium chloride dissolves in water it dissociates into sodium and chloride ions. What is this process called?
A. Cohesion
B. Adhesion
C. Dissociation
D. Surface Tension
The correct answer is C. Dissociation.
What is the chemical formula of battery acid?
A. H2SO4
B. C6H12O6
C. H20
D. CO2
The correct answer is A. H2SO4.