Sci. Method/Measurement
What is an independant variables?
What is changed in an experiment.
What is matter
anything that has mass and occupies space
What are atoms made of?
Neutrons, Protons, Electrons.
What is Ionic Bonding?
Transfer of electrons between two charged ions.
What happens during a chemical reaction?
Bonds break and and new bonds form.
What is a Dependent Variable?
What is measured in an experiment.
What makes matter change its state?
Adding or losing energy.
Where are electrons located?
In the shells or orbitals.
How many electrons create a full shell?
8
Name the four ways to prove that a chemical reaction has occurred.
1. Color change
2.Gas
3.Solid formation
4.Transfer of energy
What is a Control?
Things that stay the same in an experiment.
law of conservation of matter
matter cannot be created or destroyed
What are the charges of Protons, Electrons, and Neutrons.
Protons are positive
Electrons are negative
Neutrons are neutral
What would be the name for the bonding of Magnesium and Phosphate?
Magnesium Phosphide
What's the difference between product and reactions?
Products are the combinations of Reactants
Name the steps of the Scientific Method
1. Question
2. Research
3.Hypothesis
4. Experiment/Test hypothesis
5. Record conclusion
What is density?
the mass per unit volume of a substance
The formula is density=mass/volume
Which subatomic particle determines the identity of an atom?
Protons
What does NASL stand for?
N=Needed
A=Available
S=Shared
L=Left over
Balance this equations
_Al2O3 -> _Al + _O2
2Al2O3 -> 4Al + 3O2
How do we measure volume of a liquid?
With a graduated cylinder with mL
What are the two types of Mixtures?
Homogeneous and Heterogeneous
What is the atomic number for an element?
How many protons it has.
Bonding name of Aluminum and Sulfur?
Aluminum Sulfide.
Name the 5 types of chemical reactions.
1. Synthesis
2. Decomposition
3. Single replacement
4. Double replacement
5. Combustion reactions