Biology is...
This type of data deals with descriptions rather than measurements
Qualitative data
A _______ is supported by a large body of evidence, is general and has a broader scope than a hypothesis.
Theory
An _________is a substance that cannot be broken down to other substances by chemical reactions
Element
A _________consists of two or more atoms held together by covalent bonds
Molecule
Water is a_______molecule. Opposite ends have opposite charges.
Polar
________ is a measure of how hard it is to break the surface of a liquid. Hint: mosquitos float in water.
Surface tension
A tentative answer to a well-framed question is called a...
hypothesis
Ideally, how many variables will differ between the control and experimental groups?
An element's __________ is the number of protons in its nucleus.
Atomic number
In a ______molecule, the atoms share their electrons equally in their covalent bond.
Nonpolar
_______ is an attraction between different substances, for example, between water and plant cell walls
Adhesion
Water has a ________ specific heat.
High
A scientific hypothesis has to be...???
Testable/falsifiable
A group used to cancel the effects of unwanted variables is called...
Control
The chemical behavior of an atom is mostly determined by the_____________
Valence electrons
A negatively charged ion is called a(n)...
Anion
A_________ is a liquid that is a homogeneous mixture of substances
Solution
The amount of heat required to raise the temperature of 1 g of water by 1°C is called a...
Calorie
This type of science describes natural structures and processes. It's based on observation and data analysis:
Discovery Science
The factor being measured that is predicted to be affected by another variable is called...
Dependent variable
96% of living matter is made up by these 4 elements:
C,H,O,N
When is an element considered chemically inert?
When its valence shell is full
Oil molecules are ___________because they have relatively nonpolar bonds
Hydrophobic
What is a hydronium ion?
A molecule with 3 hydrogen and 1 oxygen atoms
This type of reasoning draws conclusions from repeated specific observations.
Inductive reasoning
Mention the steps of the scientific method:
Observation, inquiry/question, hypothesis, experimentation/testing, analysis, conclusion
_________ are two atoms of an element that differ in number of neutrons
Isotopes
______________is an atom’s attraction for the electrons in a covalent bond
Electronegativity
As a liquid evaporates, its remaining surface cools, this is called...
Evaporative cooling
Explain why water has a high specific heat:
Because of hydrogen bonding (HB). Heat is absorbed when HB break and released when HB form