Show:
The
Periodic Table
Structure of Atoms
Metals and Nonmetals
Miscellaneous
100
A chart of the elements that shows the repeating pattern of their properties.
What is The Periodic Table of Elements.
100
The name for the very small center core of an atom.
What is the nucleus.
100
Metals are located on which side of the periodic table?
What is the left side.
100
Atoms are mostly made of what?
What is empty space.
200
The number of protons in the nucleus of an atom (what makes an element unique).
What is the atomic number.
200
Name the three particles inside the atom.
What are the the protons, neutrons, and electrons.
200
What group in the periodic table contains the most reactive metals?
What is group 1.
200
Each horizontal row in the periodic table is called what?
What is a period.
300
What does the word "periodic" mean?
In a regular, repeated pattern.
300
Name the two particles that are inside the nucleus of an atom.
What are the protons and neutrons.
300
What group is the periodic table is the least reactive?
What is group 18 (noble gases)
300
Which element has an average atomic mass nearest to 31?
Phosphorus.
400
Mendeleev noticed that patterns appeared when he arranged the elements in what way?
By increasing atomic mass.
400
What two things make up nearly all the mass of an atom? (atomic mass)
What are the protons and neutrons.
400
Fill in the blank: The reactivity of metals tends to ___________ as you move from left to right across the periodic table.
What is decrease.
400
Use the periodic table to name two elements that have properties similar to those of chlorine (Cl)
What is fluorine, bromine, astatine, iodine
500
What information does each square in the periodic table contain?
What is the 1. element's atomic number 2. chemical symbol 3. element's name 4. atomic mass
500
Atoms are nearly too small to be measured in everyday units of mass, such as grams or kilograms. Instead, scientists use units know as what?
What are atomic mass units (amu).
500
Inside the sun, nucleus fusion creates helium out of what element?
What is hydrogen.
500
To try to find a pattern that applied to all elements, Mendeleev wrote down what information about each element? (5)
What is melting point, density, color, atomic mass, and the number of chemical bonds it could form.