Nature of Science
An educated guess
What is a hypothesis?
Positively charged particle
What is a proton?
Represents the number of protons in any atom
What is the atomic number?
Molecule or Compound: O2
Molecule
The percent of the Earth that is covered by water
What is 71%?
The variable that you change
What is the independent variable?
Using your senses to state a fact
What is an observation?
Negatively charged particle
What is an electron?
Protons + Neutrons
What is the atomic mass?
Molecule or Compound: H2O
Compound
Water can exist in these three phases on Earth
What are solid, liquid, and gas?
The variable that you measure
What is the dependent variable?
Drawing a conclusion based on an observation
What is an inference?
What is a neutron?
What is a neutral atom?
A larger molecule with repeating patterns called 'polymers'
What is a macromolecule?
The water's stickiness to itself
What is cohesion?
The variables that stay the same
What are constants?
Explains why something happens
What is a scientific theory?
The two particles that go inside the nucleus
What are protons and neutrons?
Atomic Mass - Atomic Number
How do you find the number of neutrons?
Chemical bond that shares electrons equally
What is a covalent bond?
The reason why ice floats in water
Ice is less dense (lighter)
The variable that you compare your results to
What is the control?
Descriptions of patterns in nature
What is a scientific law?
Electrons in the first and second shells
2 in the first and up to 8 in the second
More protons than electrons
what is a +ion or cation?
Chemical bond in which the electrons are shared unequally
What is a polar covalent bond?
Water's stickiness to other things
What is adhesion?
The name for steps that you must take when you want to conduct an investigation/experiment
What is the scientific method?
Variable that gets graphed on the x-axis
What is the independent variable?
Name of electrons in the outer most shell
What are valance electrons?
More electrons than protons
What is a -ion or anion?
Chemical bonding that is so unequal that one electron is transferred from one atom to another
What is an ionic bond?
Water is this type of chemical bond
What is a polar covalent bond?
The variable that gets graphed on the y-axis