To _____ a substance means to produce it by means of chemical or biological reactions. ( )
A: synthesize
B: detach
C: affix
D: attach
A: synthesize
B: detach
C: affix
D: attach
举一反三
- A chemical is any aspect of a substance which is only seen by means of a chemical reaction (反应).
- A chemical _______ is any aspect of a substance which is only seen by means of a chemical reaction (反应). A: queries B: property C: obstacles D: margins
- Effective collision is a powerful collision between active molecules that can produce chemical reactions.
- fasten means<br/>to: A: work under B: attach to C: report to D: prepare for
- Reactions that produces a precipitate are all exothermic reactions.