Science Skills
2.1 x 10-4
What is 0.00021 written in scientific notation?
Protons
Which subatomic particles have positive charges?
Periods are arranged horizontally and groups are arranged vertically
How are periods and groups arranged on the periodic table?
The most stable electron configuration
What are the noble gases?
The stuff you start out with in a chemical reaction
What are reactants?
1) Identify the problem. 2) Create a hypothesis. 3) Design an experiment. 4) Perform the experiment. 5) Analyze data. 6) Communicate the results.
What is the scientific method?
Electrons
Which subatomic particles have negative charges?
They are organized by similar physical and chemical properties, as well as increasing atomic number and mass
How are elements on the periodic table organized?
Valence electrons are transferred between a metal and nonmetal atom
What occurs in an ionic bond?
The stuff you finish with in a chemical reaction
What are products?
A gauge of how exact a measurement is
What is precision?
Neutrons
Which subatomic particles have no charges?
They are all located on the left side of the periodic table (excluding hydrogen)
Where are metals located on the periodic table?
Valence electrons are shared between two nonmetal atoms
What occurs in a covalent bond?
Reactants → Products
What does a basic chemical equation look like?
The closeness of a measurement to the actual value of what is being measured
What is accuracy?
In the nucleus of an atom
Where are protons and neutrons located in an atom?
Elements in the same group have the same number of valence electrons
What do elements in the same group have in common?
Solids whose particles are arranged in a lattice structure
What is crystal lattice?
Mass is neither created nor destroyed in a chemical reaction
What is the law of conservation of mass?
Independent and dependent variables
What are the manipulated and responding variables also called?
In the space outside the nucleus of an atom
Where are electrons located in an atom?
For protons and electrons, simply look at the atomic number, and for neutrons, round the atomic mass to the nearest whole number, then subtract it from the atomic number
How do you identify an element's number of protons, electrons, and neutrons?
The type of atoms in a molecule and its shape
What are the two factors that determine if a molecule is polar?
Atoms interact with each other to form new substances
What happens during a chemical reaction?