Matter
Matter with no definite volume and no definite shape
What is Gas?
Each energy level of an atom has a maximum number of _________it can hold
What is Electrons?
This number is how many periods there are on the periodic table of elements
What is 7?
A material that can be hit without shattering
What is malleable?
A substance that is made from two or more simpler substances and can be broken down into simpler substances
What is a compound?
Matter with definite volume but no definite shape
What is Liquid?
Dot diagrams represent this
What is valence electrons?
In a modern periodic table, elements are arranged in order of?
What is atomic number?
You can be certain that a change is a chemical change when this has occurred.
Pure substances are classified as elements and ______?
What is compounds?
Matter in which particles are free to move in all directions until they spread evenly throughout their container
What is Gas?
Elements in Group 15 on the period table has this many valence electrons
What is 5?
Elements in groups 3 through 12 are called this
What is transition elements?
Heterogenous and homogenous mixtures are similar because
What is both contain substances that can be separated?
Matter that always has exactly the same composition is classifies as
What is pure substance?
As a sample of matter is heated, this happens to the particles
What is move more quickly?
A certain atom has 26 protons, 26 electrons, and 30 neutrons. The mass number is?
What is 56?
An element that is shiny and conducts electric current is likely this
In this type of mixture, the parts are noticeably different from one another
What is heterogeneous mixture?
When a wood fire burns, it released heat energy and this type of reaction is
What is exothermic?
Idea stating all matter is made up of particles that move and collide
What is Kinetic Theory?
This number of electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable
What is 8?
Elements with properties that fall between those of metals and nonmetals
What is metalloids?
Soda is an example of what type of mixture?
What is homogenous mixture?
Which of the following is a chemical property of matter?
What is combustibility (set on fire)?