Question

substances having similar chemical properties but different physical properties are called

Answer 1

Answer:

various shells around nucleus :

27

(c)

Al

13

(b) Li

(a), FH

(d)

40

Ca.

20

OBJECTIVE TYPE QUESTIONS

1. Multiple Choice Questions : Choose the correct answer from the options given below:

1. Cathode rays are :

(a) electromagnetic waves

(b) a beam of electrons

(c) a beam of protons

(d) a beam of protons and neutrons

2. The number of electrons which weigh as much as one atom of hydrogen are:

(a) 1600

(b) 1737

(c) 1837

(d) 1873

3. The electric charge on a proton is :

(a) + 1.6 x 10-9 C

(b) 1.6 x 1014 C

(C) 1.6 x 10-18 C

(d) 1.6 x 10-19 C

Answer 2

Answer:

physical property: Any characteristic that can be determined without changing the substance's chemical identity. chemical property: Any characteristic that can be determined only by changing a substance's molecular structure.

Explanation:

Hope this helps you mate xD