Scientific method
Identifying a phenomenon or a problem that needs explanation
Observation
The smallest unit of ordinary matter that forms a chemical element. Also, the fundamental building block of all substances. Consist of a nucleus
Atom
A pure substance made up of two or more diff elements joined by chemical bonds
Compound
A very weak type of interaction between molecules. This is NOT a chemical reaction
H bonding
The substance that gets dissolved in a liquid to make a mixture
Solute
Formulating a question based on the observation
Question
Make up of protons and electrons
Nucleus
An atom or a group of atoms that has an electric charge
Ion
Holds water molecules together hand in hand
Cohesion
A liquid substance that dissolves other materials (aka solutes) to form a mixture called a solution
Solvent
Proposing a tentative explanation or prediction that can be tested
Hypothesis
Positively charged particles. # of them in an atom determines the elements identity
Protons
weak, distance - dependent electrical attractions between neutral atoms or molecules. Occurs when moving electrons create brief, uneven charge balances. They help shape physical traits
Van der waals
When water molecules stick to other substances
Adhesion
A physical combination of two or more substances where the parts are not chemically joined together
Mixture
Designing and conducting experiments to test the hypothesis. Involves collecting and analyzing data
Experimentation
Neutral particles that contribute to the mass of the atom and help stabilize the nucleus
Neutrons
Bond formed between 2 or more non metals
Covalent bond
A key indicator of chemical, physical, and biological changes in water
PH
A cloudy mixture where solid pieces floats inside inside water without dissolving
Suspension
Interpreting the data to determine whether it supports or refutes the hypothesis
Analysis
Negatively charged particles
Electrons
Bond formed between a metal and a non metal (where one atom gains electrons while the other loses
Ionic bond
Keeps the PH of a substance consistent, whether in presence of acids or bases
Buffer
A chemical substance that accepts hydrogen ions or releases hydroxide ions when dissolved
Acid