The type of change happens when sugar dissolves in water.
What is a physical change?
100
The periodic table is arranged in increasing order of this.
What is the atomic number?
100
Matter that has only one kind of an atom is called this.
What is an element?
100
This number represents the number of protons in an atom.
What is the atomic number?
100
The name given to the Group 1 metallic elements: lithium, sodium, potassium, rubidium, cesium and francium; all are highly strongly reactive, soft, low-density metals.
What are alkali metals?
200
This type of change happens when a plant grows into a shrub.
What is a chemical change?
200
The name for vertical columns on the periodic table.
What are groups or families?
200
Matter is made up of tiny particles that are called...
What are atoms?
200
Term applied to pure substances and to mixtures that are of a uniform composition throughout. Example alloys and solutions.
What is homogeneous?
200
A Bohr Diagram can have a maximum number of ____ electrons on the first shell and _____ electrons on the second and third shell.
What are 2 and 8?
300
This type of change happens when a steak is well cooked.
What is a chemical change?
300
The horizontal rows that elements are arranged in.
What are periods?
300
This is the smallest part of an atom.
What is an electron?
300
This number represents the number of protons and neutrons in an atom.
What is the mass number?
300
Metals are found on this side of the periodic table.
What is the left side?
400
When heat is produced and absorbed and a starting color disappears, this is probably an indication that this type of change has occurred. (Two or more observations have taken place page 169).
What is a chemical change?
400
Elements have been divided into groups based on this.
What are similar properties.
400
Colloids and suspensions are examples of this.
What is a mechanical mixture?
400
The number of protons in an element is equal to the number of ____________.
What is an electron?
400
_____________ are good conductors of electricity.
What are metals?
500
A change in matter in which no new substance is formed.
What is physical change?
500
Scientists have divided elements into these two categories.
What are metals and non-metals.
500
Most known elements today are found in this state of matter.
What is a solid?
500
These are found in the nucleus of an atom.
What are protons and neutrons?
500
Term applied to mixtures that are not of uniform composition throughout. Example metal ores.