physical science PS.4 - Periodic Table

0.0(0)
studied byStudied by 2 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/19

Last updated 2:21 PM on 12/30/22
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No analytics yet

Send a link to your students to track their progress

20 Terms

1
New cards
groups
vertical columns
2
New cards
periods
horizontal rows
3
New cards
atomic mass
the mass of an atom. measured in AMU (atomic mass units)
4
New cards
atomic number
the number of protons in an atom
5
New cards
elements in the same group have ---because they have ---
similar properties, same number of valence electrons
6
New cards
elements are arranged by --- atomic numbers going across the table
increasing
7
New cards
T/F: The number of protons can change during a chemical or physical change
false
8
New cards
atomic mass
the average amount of protons and neutrons in an atom
9
New cards
how many known elements are there?
118
10
New cards
elements with an atomic number of more than -- are produced in laboratories and aren’t found naturally in earth
92
11
New cards
isotopes
atoms in an element that have different amounts of neutrons
12
New cards
ions
when an atomic gains or loses (an) electron(s)
13
New cards
ions have different --- than their original atom
chemical properties
14
New cards
where are metals on the periodic table?
the left
15
New cards
where are metalloids on the periodic table?
the stairstep
16
New cards
where are nonmetals on the periodic table?
the right
17
New cards
metallic properties --- from left to right
decrease
18
New cards
metallic properties --- from top to bottom
increase
19
New cards
what determines the chemical reactivity of an element?
the number of valence electrons
20
New cards
what are the 3 categories that elements can be?
metals, metalloids, and nonmetals