Chemistry Unit Review Flashcards
State the 5 parts of particle theory of matter
1 matter is made up of tiny particles
2. All particles of one substance are the same
3. Particles are always in motion
4. Particles are separated by empty space
5. Particles are attracted to each other
Define chemistry
The study of matter and the changes it undergoes
What is matter?
Anything that has mass and volume takes up space)
How do particles move?
Solids-
Gases-
Solids- vibrate in a fixed position
Gases - fastest moving
Atoms cannot be
Broken down into a smaller unit
Matter = pure substance, mixture
Pure substance = element, compound
Mixture = solution (homo mix), mechanical mixture (hetero Mix)
Pure substance
Contains only one kind of particle
Components can’t physically separate
Elements
Pure substance containing atoms that are all The same
Can’t be broken down by ordinary chemical methods
Compounds
Pure substances containing atoms of 2+ elements held together by bonds
Mixture
2+ pure substances keeping their own physical and chemical properties
Solution
A phase
Too small too see
Mechanical mixture
More than 1 phase
Can be seen
What are physical properties?
Physical description of a substance that can help identify it
What are chemical properties?
The behaviour of a substance as it becomes a new substance
Five indicators that a chemical change has occurred?
- Change of Color
- Change of odour
- Heat/light given off or absorbed
- Gas formed
- Precipitate solid forms
Where are the metals located on the periodic table?
On the left side of the staircase
Where are nonmetals located on the periodic table?
On the right side of the staircase
What does an atom have to do to become an ion
Have a full valence orbit
In the following compound describe the various numbers represent
4Cu(NO )
3 2
4- Coefficient indicates a number of molecules
3- Subscript number of atoms in a molecule
2- Subscript outside the bracket multiplies items inside bracket 
What are the seven diatomic elements
- H2
- N2
- O2
- I2
- F2
- Cl2
- Br2
The materials to start with an a chemical reaction are called the
Reactants
The materials you end up with in a chemical reaction are called the
Products
How does a molecular compound form
Like Euler compounds formed by sharing balance electrons between nonmetal atoms
How does a ionic compound formed
Ionic compound forms between metal and nonmetal atoms
How do you know that a compound is ionic
It has a full valance orbit
