Show:
8.5 A Part 1
8.5 A Part 2
8.5 B
8.5 C Part 1
8.5 C Part 2
100
In an atom, where are the protons and neutrons located?
What is the nucleus?
100
In an atom, the electrical charge of all ____ is positive?
What are protons?
100
What must you know about an atom in order to know which element it is? A. the number of protons B. the number of electrons C. the number of protons and neutrons D. the number of neutrons and electrons.
What is A. the number of protons?
100
A physical property shared by all the elements in Group 2 is A. they are all gases at room temperature B. they are all liquids at room temperature C. they are all metals D. they are all radioactive
What is C. they are all metals?
100
The elements that are located along the stair-step (zig zag) line of the periodic table are
What are metalloids?
200

A neutral charge particle found in the nucleus of an atom

What is a neutron?

200

A model of an atom has 6 neutrons, 5 protons and 6 electrons. Describe the atoms charge.

What is negative 1 (-1)?

200
Which of the following is true about an element? A. Every atom of the element has the same atomic mass. B. Every atom of the element has the same number of protons C. Every atom of the element has the same number of electrons D. Every atom of the element has the same number of neutrons
What is B. Every atom of the element has the same number of protons?
200
What determines the atomic number of an element?
What is the number of protons?
200
According to the periodic table how many protons does chromium have?
What is 24?
300
How are electrons arranged in atoms?
What are electron clouds or energy levels?
300
A neon atom contains 10 protons, 10 neutrons and 10 electrons. What is its mass number?
What is 20?
300

Element with 80 protons

What is Mercury?

300
As you read through the periodic table from top to bottom the atomic mass of the elements _____
What is increases?
300
Looking at column two on the periodic table determine the period for berylium
What is period 2?
400

Number of electrons that fit in the 1st ring

What is 2 electrons?

400
What is a neutron?
A neutral particle in the nucleus of an atom.
400

Part of the atom that represents the reactivity of the element.

What are Valence Electrons?

400
The periods of the periodic table tell us this

What is the number of energy levels

400

An element with an atomic number of 117 would belong in which group?

What is a group 17?

500

Number of electrons that fit in the 3rd ring

What is 8 electrons?

500
How many valence electrons does Iodine have?
What is 7?
500
Elements with seven valence electrons are A. highly reactive B. highly stable C. high in mass D. low in mass
What is A. highly reactive?
500
Sodium is a very chemically reactive metal that has only one electron in its outermost energy level.The element with physical properties most similar to sodium is — A. Magnesium B. Potassium C. Calcium D. Scandium
What is B. Potassium?
500

Which group of elements on the periodic table is least reactive?

What is group 18 (Noble Gases)?