Complete Clue List
Across
1. Power source that converts stored chemical energy into electricity
6. Divisible by two without a remainder, as an integer
7. Cause an atom or ion to gain electrons, in chemistry
8. Plant part that supports leaves and carries water
10. Alkane with the molecular formula C2H6
12. Part of a bicycle wheel that holds the tyre
13. Force exerted on an object by gravity
14. Upward force from an aeroplane's wings in steady, level flight
15. Kidney and runner are types of these legumes
18. Fruit whose varieties include Conference and Comice
19. Structure built by a bird to hold its eggs
Down
1. Take air into the lungs and let it out
2. Greek letter used as an alternative notation for twice pi
3. Substances represented by H, C and O on the periodic table
4. Evergreen trees and shrubs of the genus Taxus
5. Instrument used to measure wind speed
9. Rotary machine driven by moving water, steam or air
11. Noble gas with the chemical symbol Ar
13. Silken structures spun by spiders
16. Wood-splitting tool with a wedge-shaped head
17. Collection of distinct objects, in mathematics