Insulator! I hope this helps! Pls mark mine the brainliest;)
Answer:
No it is not a physics because in this there is about classification of element so it is in chemistry that's why it is not physics.
Answer:
71%
Explanation:
Theoretical Yield = 24
Actual Yield = 17
(Actual Yield/Theoretical Yield)*100% = (17/24)*100% ≈ 71%
Answer:
No, it's a physical reaction.
Explanation:
A chemical change produces new chemical compounds, but combining water and powder is just mixing the powder with the water. It's not a new compound.
I don't know how to really explain, sorry :)
Answer:Reliability
Explanation:
Reliability of a test refers to how consistently a test measures a characteristic under the same conditions.
Reliability can be defined as the degree of consistency of which a chemical test gives a similar result. measure. A test is said to be highly reliable when it gives the same repeated result under the same conditions of measure.
But when a test gives different results under the same condition of measure it has a low reliability.
Hence, If a test yields consistent results every time it is used, it has a high degree of reliability.