Question

intro to chemistry unit 1 vocabulary class activity
c. define each of the following terms. give one example for each word/phrase for as many as possible to get credits

word	definition (partially handwritten)	word	definition
chemistry	...	chemical property
conclusion	...	chromatography
dependent variable	...	compound
experiment	...	crystallization
hypothesis	...	distillation
independent variable	...	element
mass	...	extensive properties
matter	...	filtration
pure research	...	heterogeneous mixture
qualitative data	...	homogeneous
quantitative data	(blank)	intensive properties
scientific method	(blank)	law of definite proportions
theory	(blank)	liquid
weight	(blank)	mixture
accuracy	(blank)	percent by mass
base unit	(blank)	periodic table
conversion factor	(blank)	physical changes
density	(blank)	physical property
dimensional analysis	(blank)	solution
graph	(blank)	states of matter
kilogram	(blank)	vapor
liter	(blank)	significant figure
meter	(blank)	scientific notation
percent error	(blank)	precision

20 points

Explanation:

To solve this, we'll define a few key terms from the list (e.g., "Chemistry", "Scientific Method", "Element") as examples:

1. Word: Chemistry

Chemistry is the scientific study of the composition, structure, properties, and reactions of matter (elements and compounds), including how substances interact, transform, and the energy changes involved. Example: Studying how hydrogen and oxygen react to form water ($\ce{2H_2 + O_2 -> 2H_2O}$).

2. Word: Scientific Method

The scientific method is a systematic process to investigate phenomena: (1) Observe a problem, (2) Form a hypothesis, (3) Design/conduct an experiment, (4) Collect/analyze data, (5) Draw conclusions. Example: Testing if plants grow better in sunlight (hypothesis) by growing one plant in light and one in darkness (experiment).

3. Word: Element

An element is a pure substance consisting of only one type of atom (same number of protons). It cannot be broken down into simpler substances by chemical means. Example: Carbon (C) (found in diamonds, graphite) or Oxygen (O₂) (in air).

(Repeat this format for other terms as needed, defining each with a clear explanation and example.)

If you need specific terms defined, please specify which ones, and I’ll expand on them!

Answer:

An element is a pure substance consisting of only one type of atom (same number of protons). It cannot be broken down into simpler substances by chemical means. Example: Carbon (C) (found in diamonds, graphite) or Oxygen (O₂) (in air).

(Repeat this format for other terms as needed, defining each with a clear explanation and example.)

If you need specific terms defined, please specify which ones, and I’ll expand on them!