Science - The Basics
The first step in this process is to make observations.
What is THE SCIENTIFIC METHOD.
The smallest chemical unit of an element.
What is the atom.
This atomic model shows negatively charges particles spread throughout a positively charged mass of matter.
What is Thomson's Plum Pudding Model.
This type of Bond is formed when atoms TRANSFER Electrons.
What is an IONIC BOND.
A chemical reaction is accompanied by a change in this.
What is energy.
This type of observation always has a number in it.
What is a Quantitative Observation.
Almost all matter on earth exists in one of these three stages.
What is solid, liquid or gas.
The number of protons in an atom is called this.
What is the Atomic Number.
Negative Ions are called this.
What is ANIONS.
Compounds made of only TWO elements are called this.
What are Binary Compounds.
This is the variable that we manipulate in an experiment.
What is the Independent Variable.
The energy that an object has due to its motion.
What is kinetic energy.
Electrons at the highest energy level are called this.
What are Valence Electrons.
A stable electron configuration has this many valence electrons.
What is 8.
In Experiment 5.1, Decomposition of Water, we produced a chemical reaction that separated water into these two gases.
What are Hydrogen and Oxygen.
A well tested explanation of a phenomenon in the natural world.
What is a Scientific Theory.
The ability of matter to combine chemically with other substances to form new substances.
What is Reactivity.
The sum of the protons and neutrons in the nucleus of an atom are called this.
What is the Mass Number.
This type of molecule has slight positive and negative charges due to an imbalance in the way electrons are shared.
What is a POLAR molecule.
These two terms describe whether a chemical reaction releases energy or absorbs energy.
What are Exothermic and Endothermic reactions.
1/100 of a meter in the metric system.
What is the Centimeter.
This theory states that all particles of matter are in constant motion.
What is the Kinetic Theory of Matter.
This is the only atom that has no Neutrons.
What is Hydrogen-1
The force of attraction between molecules of the same substance is called this.
What is Cohesion.
When we write the chemical equation for the decomposition of water, the ENERGY shows up on this side of the equation.
What is the LEFT side, or the side of the reactants.