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BaLLatris [955]
3 years ago
7

Scientists use the chemical and physical properties of matter to differentiate substances. Which of the following is a chemical

property?
(A) A starch sample turns blue when introduced to iodine
(B) Gold's property of malleability allow it to be shaped into a ring.
(C) Salts exhibit electrical conductivity.
(D) A metal is identified by its density.
Chemistry
2 answers:
emmainna [20.7K]3 years ago
5 0

Answer:

C

Explanation:

Im pretty sure its C, since it becomes a whole other thing, which what chemical property is

Orlov [11]3 years ago
4 0

Answer:

a.) A starch sample turns blue when introduced to iodine

Explanation:

A is a chemical change whereas the other answers would be physical changes.

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In a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes. Determine the average relative atomic
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The average relative atomic mass of a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes is 9.6g.

<h3>What is Atomic mass? </h3>

Atomic mass is defined as the whole mass of an atom.

It is also defined as the sum of atomic number and number of neutrons.

Atomic mass = Atomic number + neutrons

<h3>What is Isotopes?</h3>

Isotopes are the those element which have same atomic number but have different mass number and number of neutrons.

The average relative atomic mass can be calculated as

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learn more about atomic mass:

brainly.com/question/14250653

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