Theory vs Law
What is a hypothesis?
A testable idea or explanation that leads to scientific investigation.
When a solid changed into a liquid what is that process called?
Melting.
What is a Significant Figure?
The significant figures of a number written in positional notation are digits that carry meaningful contributions to its measurement resolution. This includes all digits except: All leading zeros.
What is a proton and where is it located?
A subatomic particle that has a positive charge and that is located in the nucleus of an atom.
What is the Scientific Method?
A series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
What is a Theory?
A system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation.
True or False?
Solids have a definite shape and definite volume.
True.
How many Significant Figures?
32445
5 Sig Figs.
What is Atomic Mass?
The mass of an atom expressed in atomic mass units.
True or False?
Science relies on quantitative and qualitative data.
True.
What is a Law?
A descriptive statement or equation that reliably predicts events under certain conditions.
True or False?
Gas has a definite volume.
False.
How many Significant Figures?
2348,23
6 Sig Figs.
What is an Atomic Number?
The number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element.
Inference involves developing explanations from observations.
What is a Research Question?
A question that a research project sets out to answer.
When a gas reaches its condensation point it becomes a what?
Liquid.
How many Significant Figures?
1.009
4 Sig Figs.
What is a Mole?
The SI base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms of carbon in exactly 12g of carbon -12.
What is the one thing that changes in an experiment?
Variable.
What is the difference between a Theory and a Law?
A scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory.
What is the difference between gas and plasma?
The particles are electrically charged.
How many Significant Figures?
0.0023
2 Sig Figs.
What is an Orbital?
A region in an atom where there is a high probability of finding electrons.
All good experiments can be what?
Testable.