
1. Energy level
2. Orbital
3. Valence electron
4. Cation
5. Anion
6. Isotope
7. Metal
8. Nonmetal
9. Semiconductors
10. Alkali metal
11. Alkaline earth metal
12. Transition metal
13. Halogen
14. Noble gas
15. Chemical bond
16. Chemical structure
17. Ionic bond
18. Covalent bond
19. Polar covalent bond
20. Metallic bond
1. Compound
2. Polyatomic ion
3. Ionic compound
4. Covalent compound
5. Oxidation number
6. Empirical formula
7. Molecular formula
8. Organic compound
9. Polymer
10. Biochemical compound
11. Carbohydrate
12. Protein
13. Amino acid
14. Reactant
15. Product
16. Chemical energy
17. Exothermic reaction
18. Endothermic reaction
19. Synthesis reaction
20. Decomposition reaction
1. Chemical reaction
2. Mole ratio
3. catalyst
4. enzyme
5. substrate
6. equilibrium
7. LeChatelier’s Principle
8. Suspension
9. Colloid
10. Emulsion
11. Solution
12. Solute
13. Solvent
14. Heterogeneous mixture
15. Homogeneous mixture
1. Inertia
2. Force
3. Energy
4. Work
5. Chemical Bond
6. Polar Covalent Bond
7. Heat
8. Temperature
9. Phase of matter
10. Electrolysis
11. Saturated solution
12. Unsaturated solution
13. Supersaturated solution
14. Salt
15. Solubility curve
1. Acid
2. Indicator
3. Base
4. pH
5. neutralization reaction
6. radioactivity
7. nuclear radiation
8. alpha particle
9. beta particle
10. gamma ray
11. neutron emission
12. half-life
13. fission
14. fusion
15. strong nuclear force
16. critical mass
17. nuclear chain reaction
1. Wave
2. Medium
3. Mechanical wave
4. Longitudinal wave
5. Crest
6. Trough
7. Amplitude
8. Period
9. Frequency
10. Wave speed
11. Doppler Effect
12. Reflection
13. Refraction
14. Diffraction
15. Interference
16. Constructive interference
17. Destructive interference
18. Standing wave
19. Pitch
20. resonance
1. Ultrasound
2. Sonar
3. Photon
4. Intensity
5. Radar
6. Electromagnetic spectrum
7. Ultraviolet
8. Infrared
9. Radio
10. Visible light
11. Gamma ray
12. Light ray
13. Virtual image
14. Real image
15. Concave
16. Convex
17. Prism
18. Lens
19. Dispersion
20. Magnification
1. Electrical field
2. Potential difference
3. Cell
4. Current
5. Resistance
6. Electric circuit
7. Schematic diagram
8. Series circuit
9. Parallel circuit
10. Fuse
11. Circuit breaker
12. Alternating current
13. Direct current
14. Generator
15. Solenoid
16. Magnetism
17. Transformer
18. Electromagnetic induction
19. Domain
20. Electromagnet