Solve these clues to fill the grid.
- The heating elements of a stove or range on which pots and pans are placed for cooking
- 4 Across
- A tentative insight into the natural world
- 8 Across
- To arrange by systematic planning and united effort
- 9 Across
- Study of the natural world through experiments
- 11 Across
- Tool for weighing things; also a set of musical notes
- 13 Across
- To decide by reasoning
- 15 Across
- Sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
- 1 Down
- A metric unit of weight equal to one thousandth of a kilogram
- 2 Down
- Trying something to find out about it
- 3 Down
- German chemist who with Kirchhoff pioneered spectrum analysis but is remembered mainly for his
- 4 Down
- Staying steady without falling over
- 5 Down
- The vertical force exerted by a mass as a result of gravity
- 6 Down
- The subject matter at issue
- 7 Down
- A flatbottomed jar made of glass or plastic
- 10 Down
- How much matter something contains
- 12 Down
- Bottle that has a narrow neck
- 14 Down