SCIENCE - THE BASICS
A factor that can change in an experiment.
What is a VARIABLE?
A substance that does not have a definite shape nor a definite volume but takes the shape and volume of its container.
What is a GAS?
The ratio of a substance's mass to its volume.
The greatest mass of an atom is located here.
What is the NUCLEUS?
Negatively charged subatomic particle.
What is an ELECTRON?
A well-tested explanation of a phenomenon in the natural world.
What is a SCIENTIFIC LAW?
This is energy that an object has due to its motion.
What is KINETIC ENERGY?
Cereal and milk is a good example of this.
What is HETEROGENEOUS?
He proposed that negatively charged particles were spread evenly throughout the positively charged mass of matter.
How was THOMPSON?
The number of protons in an atom.
What is the ATOMIC NUMBER?
A logical conclusion drawn from observations, previous knowledge, and available information.
What is an INFERENCE?
Contains two or more substances.
When a gas changes directly to a solid.
What is DEPOSITION?
This scientist's atomic theory stated that all matter is made of particles called atoms.
How was DALTON?
Electrons that are in the highest energy level.
What is a VALENCE ELECTRONS?
An investigation in which the factors that influence the outcome are kept the same except for one - the factor being studied.
What is a CONTROLLED EXPERIMENT?
Pure substances that contain two or more elements chemically joined in a fixed proportion.
What is are COMPOUNDS?
The substance in a solution in which the solute dissolves.
What is a SOLVENT?
This group on the periodic table is the most reactive.
What is GROUP 1A?
These subatomic particles are inside the nucleus of an atom.
What are PROTONS and NEUTRONS?
A well tested description of one phenomenon in the natural world that often includes mathematical terms.
What is a SCIENTIFIC LAW?
The parts of the mixture are so evenly distributed that it is difficult to distinguish one substance from another.
What is HOMOGENEOUS?
Rusting metal and baking a cake are both examples of this type of change.
What is CHEMICAL?
What is a higher energy level?
Atoms of an element with the same number of protons but different numbers of neutrons
What are ISOTOPES?