Sec. 2.1 Vocab
Critical thinking Sec. 2.1
Properties of water
Critical Thinking Sec. 2.2
Sec. 2.2 vocab
100
the center of an atom, which contains the protons and neutrons
What is the nucleus
100
The 3 particles that make up an atom and their location in regards to the nucleus
What is protons, neutrons, and electrons. Neutrons and protons inside nucleus and electrons outside nucleus
100
The penny activity showed that water molecules pull together
What is cohesion
100
Sodium has 11 protons which means it has this many electrons and also that this mystery number is its atomic number as well
What is 11
100
a type of mixture in which all the components are evenly distributed
What is a solution
200
a pure substance that consists entirely of one type of atom
What is an element
200
The reason atoms have no charge
What is there are an equal number of protons and electrons that balance each other out (making the charge neutral)
200
amount of heat energy needed to increase a substance's temperature
What is heat capacity
200
the joining together of 2 atoms in a compound by either sharing or transferring electrons
What is a chemical bond
200
a mixture of water and nondissolved material
What is suspension
300
a substance formed by the chemical combinations of two or more elements in definite proportions
What is compound
300
location of difference in isotopes
What is nucleus (because neutrons are located in nucleus)
300
This helps draw water out of the roots of a plant and up into its stems and leaves
What is capillary action (will accept adhesion)
300
The reason that a water molecule cannot dissolve a nonpolar molecule
What is the partially charged atoms in water are not attracted to substances that have no charge (will accept that nonpolar substances have no charge)
300
a compuoun that prevents sharp, sudden changes in pH
What is buffer
400
one of several forms of a single element, each of which contains the same number of protons but different nmbers of neutrons
What is isotope
400
type of bond that potassium (which can easily lose 1 electron) would participate in with chlorine
What is ionic bond
400
the pull between a partially negative atom in one molecule and a partially positive atom in a different molecule
What is hydrogen bond
400
These are formed when a water molecule breaks apart
What is hydrogen ion H+ and hydroxide ion OH-
400
a compound that releases hydroxide ions (OH-) in solution; a solution with a pH of more than 7. (extra clue will be given if needed)
What is base (will accept basic)
500
the smallest unit of most compounds that displays all the properties of that compound
What is a molecule
500
ions
What is positively or negatively charged atoms
500
a molecule in which the charges are evenly spread out. Different sides have slight positive of slight negative charge
What is polar molecule (will accept water molecule)
500
An atom that loses electrons has this kind of charge
What is a positive charge (which would make it a positely charged ion now)
500
a compound that releases hydrogen ions (H+) in solution; a solution with a pH of less than 7. (extra clue will be given if needed)
What is acid (will accept acidic)
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