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The chemical symbol of Silver.
a. Si
b. S
c. Au
d. Ag
d. Ag
The study of matter (what it is made of, what its usual characteristics are, and how it reacts with other matter.)
a. Biology
b. Physics
c. Chemistry
d. Social Studies
c. Chemistry
The 1st shell of an atom can hold a maximum of ____________ electrons.
a. 1
b. 2
c. 3
d. 4
b. 2
It uses chemical symbols and numbers to abbreviate the name of a compound.
Example: Carbon dioxide – CO2
a. chemical formula
b. chemical reactions
c. nuclear formula
d. atomic reactions
a. chemical formula
A type of chemical reaction when two elements switch places.
Double replacement
Is anything that has mass and volume.
a. energy
b. matter
c. force
d. motion
b. matter
Substances containing only one kind of atom. Examples: gold, silver, iron, oxygen and copper
a. elements
b. molecules
c. compounds
d. chemical reactions
a. elements
The 2nd shell of an atom can hold a maximum of _____________ electrons.
a. 4
b. 8
c. 16
d. 32
b. 8
A type of Chemical Reaction when molecules combine is called _________________.
Synthesis
Give the chemical symbols of the following elements:
1. Aluminum
2. Mercury
3. Neon
4. Copper
5. Iron
1. Aluminum - Al
2. Mercury - Hg
3. Neon - Ne
4. Copper - Cu
5. Iron - Fe
THe most interesting form of matter that can be found in three states of matter is?
a. balloon
b. juice
c. water
d. soda
c. water
The center section of the atom. It contained protons and neutrons is known as __________.
a. core
b. inner core
c. nucleus
d. central
c. nucleus
He was best known for his research on atomic structure.
a. Neils Bohr
b. Isaac Newton
c. Aristotle
d. Dmitri Mendeleev
a. Neils Bohr
A type of chemical reaction when compounds break apart.
Decomposition
Freezing is the opposite of _________
Melting
It is the smallest particle of an element.
a. molecule
b. compound
c. atom
d. chemicals
c. atom
By adding together the number of protons and neutrons results in the approximate _________.
a. atomic reaction
b. atomic number
c. atomic bomb
d. atomic mass
d. atomic mass
A special machine used by scientists to smash an atom.
a. Particle accelerators
b. Particle decelerators
c. Particle synthesis
d. Particle stimulators
a. Particle accelerators
A type of chemical reaction when one element replaces another
Single replacement
Evaporation is the opposite of _________
Condensation
If an element has 5 protons and 5 neutrons, its atomic number is?
a. 5
b. 10
c. 55
d. 0
a. 5
A cloudlike space around the nucleus. It represents the average distance of the electrons from the nucleus.
a. clams
b. shell
c. boundaries
d. limits
b. shell
A Russian chemist who came up with a method for classifying the elements based on their physical and chemical properties which is known as the periodic table of the elements.
a. Mikhail Gorbachev
b. Albert Einstein
c. Dmitri Mendeleev
d. Anton Van Leeuwenhoek
c. Dmitri Mendeleev
Enumerate the 4 types of Chemical Reactions.
1.Synthesis
2.Decomposition
3.Single replacement
4.Double replacement
Is a phenomenon that occurs when the surface of a liquid (such as water) is in contact with another phase (solid, liquid, or gas) that causes the surface of the liquid to act as an elastic sheet.
a. cohesion
b. adhesion
c. surface tension
d. capillarity
c. surface tension