Atoms, States & Periodic Table Vocabulary Match-Up

Chemistry Area 2 SHOULD DO 1 • vocabulary + quick-checks

Matched: 0 / 12   — pick one card, then click its partner (in the other column).
Terms
1
Atomic number
 
2
Mass number
 
3
Isotope
 
4
Isotope notation
 
5
Avg. atomic mass
 
6
Cation
 
7
Anion
 
8
Kinetic energy
 
9
Forces of attraction
 
10
Compound
 
11
Chemical change
 
12
Prefix (naming)
 
Definitions
A
Number of protons in the nucleus; identifies the element
 
B
Protons + neutrons in an atom
 
C
Atoms of the same element, same protons, different neutrons
 
D
Notation showing mass number (top), atomic number (bottom), element symbol
 
E
Weighted average of masses of naturally occurring isotopes of an element
 
F
A positive ion formed when an atom loses electrons
 
G
A negative ion formed when an atom gains electrons
 
H
The energy of motion of particles
 
I
The pulling force between particles that competes with their motion
 
J
A substance made of two or more different elements in a fixed ratio
 
K
A change that recombines atoms into new substances
 
L
Greek-prefix words used to name covalent compounds
 
Quick-Check 1 — Isotope Data & Notation
Fill in protons, neutrons, electrons, and isotope notation. Click each card to check.
Carbon-12
p=?, n=?, e=?
notation?
ANSWER
6p, 6n, 6e
126C
Carbon-14
p=?, n=?, e=?
notation?
ANSWER
6p, 8n, 6e
146C
Sodium-23
p=?, n=?, e=?
notation?
ANSWER
11p, 12n, 11e
2311Na
Chlorine-35
p=?, n=?, e=?
notation?
ANSWER
17p, 18n, 17e
3517Cl
Quick-Check 2 — KMT & States of Matter
For each particle description, identify the state and which factor wins: motion or attraction.
Q1
Particles race far apart and fill the whole container
ANSWER
GAS — motion wins
Q2
Particles jiggle in place in a fixed structure
ANSWER
SOLID — attraction wins
Q3
Particles slide past each other but stay in contact
ANSWER
LIQUID — balanced
Q4
Hot gas with free ions and electrons
ANSWER
PLASMA — motion wins
Q5
Solid turns directly into gas when heated
ANSWER
SUBLIMATION (energy added) — motion wins
Q6
Water collects on the outside of a cold glass
ANSWER
CONDENSATION (energy removed) — attraction wins
Q7
Ice becomes liquid water
ANSWER
MELTING (energy added) — motion wins
Quick-Check 3 — Periodic Table Classification, Ions & Diatomics
Classify each element, predict its ion, and flag the diatomic ones.
Na
Metal / N/Metal? Ion? Diatomic?
ANSWER
Metal, Na+, No
Cl
Metal / N/Metal? Ion? Diatomic?
ANSWER
Nonmetal, Cl−, Yes (Cl2)
O
Metal / N/Metal? Ion? Diatomic?
ANSWER
Nonmetal, O2−, Yes (O2)
Fe
Metal / N/Metal? Ion? Diatomic?
ANSWER
Metal, Fe2+/Fe3+, No
N
Metal / N/Metal? Ion? Diatomic?
ANSWER
Nonmetal, N3−, Yes (N2)
Quick-Check 4 — Properties, Changes & Naming
Classify each observation, or name the compound.
1
Copper conducts electricity
ANSWER
Physical property
2
Iron rusts in moist air
ANSWER
Chemical change
3
CO2
Ionic or covalent? Name it.
ANSWER
Covalent — carbon dioxide
4
NaCl
Ionic or covalent? Name it.
ANSWER
Ionic — sodium chloride
5
Water boils at 100 °C
ANSWER
Physical property