Atomic Structure
This is the basic building block of matter.
What are atoms?
These consists of only one type of atom.
What are elements?
When you cut an apple.
What is a physical change?
Mixtures are ________ combined.
What is physically?
There are ____ columns and ___ rows.
What are 18 and 7?
This sub-atomic particle never changes.
What is a proton?
When 2 or more of these chemically combine, they form this.
What are compounds?
Burning paper turns to ash.
What is a chemical change?
Vanilla Ice Cream
Air
Brass are examples of this.
What are homogenenous Mixtures?
The number of protons never changes. It is the whole number for each element.
What is the atomic number?
When these change, an isotope is formed.
What are neutrons?
Pure substances by definition, is always this.
What is the same throughout.
Changing from freezing to melting is _____ change.
What is a physical change?
This is a mixture that has the same composition throughout.
What is homogeneous mixture?
This is the number of protons and neutrons in the nucleus of any atom.
What is the Atomic Mass Number?
When these change an ion is formed.
What are electrons?
Pure Substances are ________ combined.
What is chemically?
The measure of mass per unit of volume is this physical property.
What is density
A physical combination of two or more substances that can be separated by physical means.
What is a mixture?
Columns are based on _____ chemical property.
What is similar? (Similar chemical property)
The MASS of atoms is comprised of these particles.
What are protons & neutrons?
Pure Substances of this type depend on a chemical formula.
What are compounds?
When a substance undergoes a chemical change and gas is given off this is called _____.
(boiling or reactivity)
What is reactivity?
A characteristic of a sample of matter that indicates it is a mixture by separating it using a special type of paper.
What is filtering?
The element Xenon (Xe) is on the 5th row in column 18 the Nobel gases.
What are the 2 questions being answered?
How many energy levels does Xe have?
What family is it in?