It is used to express the way that atoms of various elements form bonds to become molecules and compounds.
100
What is a mixture
Is formed when two or more substances combine without changing the nature of component substances.
100
What is the letter in the middle of chemical symbol?
The symbol.
200
What are the four parts of an Atom?
Nucleus, Protons, Neutrons, and Electrons.
200
What is the number in the top left corner of a chemical symbol mean?
it means it is the atomic number
200
What is a molecule? And what is a compound?
A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements.
200
What are examples of foams?
Shaving cream, and whipped cream.
200
How is water written?
H2O
300
How are Atoms and Elements different?
Atoms are matter that makes up the universe. Elements are the simplest form of matter.
300
How are elements in the same group on the periodic table alike?
The patterns in their properties.
300
When two atoms share electrons to form a chemical bond what is it known as?
A covalent bonds.
300
What is an example of gels?
Toothpaste.
300
In our science books, how many atomic models are there?
There are five.
400
How many Atomic models are there?
There are five.
400
What are the three groups of elements?
Metals, Nonmetals, and Metalloids.
400
What forms when the attraction of oppositely charged ions come together?
An ionic bond.
400
What is the benefit of an alloy?
They can be mixed together with other metals.
400
What are the five ways to separate mixtures?
Magnetism, Filtration, Evaporation, Distillation, and Paper Chromatography.
500
Who's model looked like a blueberry muffin?
The Thomson Model.
500
How many super heavy elements are waiting to have permanent names?
four.
500
How does an atom become an ion?
When the atom gains or loses an electron, the balance between the positive and negative charges is lost and the atom obtains a charge, and becomes an ion.
500
What are the factors that affect the rate of dissolving
Temperature, Agitation, and Surface area
500
What was the name of the famous Persian scientist who studied the elements?