How many basic substances or elements have chemist identified?
100
100
How are ions formed?
Ions are formed when an atom loses or gains one or more electrons.
100
Identify the Father of the Periodic Table.
Dmitri Mendeleev
100
Identify the element that is in Group 7, Period 4.
Manganese
100
Describe the difference between a reactant and a product.
Reactants are what you start with and products are what you end with in balancing equations.
200
What four substances did Greek philosophers believe everything was made of?
Air, water, fire, and earth
200
You have learned about ions. Design a problem that illustrates a positive ion.
If an atom loses an electron it becomes more positive. This means you have more protons and this forms a positive ion.
200
The elements in Group 18 are known as _____.
Nobel gases
200
I am element 95.
Americium
200
The atomic mass number tell you the number of _____________ and _____________.
Protons and Neutrons
300
Formulate a response to explain how to determine the charge on an atom.
By looking at the number protons and the electrons.
300
You have learned about ions. Design a problem that illustrates a negative ion.
If an atom gains an electron it becomes more negative. This means you have more electrons and this forms a negative ion.
300
Where are metalloids located on the periodic table. Provide one fact about them.
Located between metals and nonmetals. Share the properties of metals and nonmetals.
300
Identify the element that is in Group 2, Period 6.
Barium
300
The atomic number is the number of __________.
Protons
400
Differentiate between an electron cloud and the nucleus of an atom.
The electron cloud surrounds the nucleus and it is negative. The nucleus is positive because it has protons within.
400
What is used to indicate whether an ion is positive or negative?
A small plus sign or minus (negative) sign slightly to the right of the symbol.
400
How can you tell if an element is a metal, nonmetal or metalloid?
By looking at the legend or key on the periodic table.
400
What elements spell the word PERU?
Phosphorous
Erbium
Uranium
400
Explain the concept of an isotope.
The number of neutrons that is different from the number of protons.
500
Explain in detail how atoms are structured or composed?
Protons are positively charged and inside the nucleus.
Neutrons are neutral and also inside the nucleus.
Electrons are negatively charged and outside the nucleus.
500
Explain how we have this Cl-.
By gaining an electron.This is a negative ion.
500
Groups 3-12 are known as _____________. Identify at least three.
Transition elements
Gold, silver, copper, iron
500
What elements spell the word NEON?
Neon
Oxygen
Nitrogen
500
Design an equation and balance it on the board in one minute.