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BaLLatris [955]
2 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]2 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]2 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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Which statements accurately describe elements? Check all that apply.
svet-max [94.6K]

Answer:

  • Elements are made up of only one type of atom.
  • Each element has a unique chemical symbol.
  • Elements can be identified by their atomic number.

Explanation:

7 0
2 years ago
Read 2 more answers
If 200.4g of water is mixed with 101.42g of salt the mass of the final solution would be reported as
d1i1m1o1n [39]

Answer:

301.8 g

Explanation:

We prepare a solution with 200.4 g of water (solvent) and 101.42 g of salt (solute). The mass of the solution is equal to the sum of the mass of the solvent and the mass of the solute.

m(solution) = m(solute) + m(solvent)

m(solution) = 200.4 g + 101.42 g

m(solution) = 301.8 g (we round-off to one decimal according to the significant figures rules)

8 0
2 years ago
How much heat is required to raise the temperature of 81.0 g of water from its melting point to its boiling point?
Dovator [93]

Answer:

Specific heat of water = 33.89 KJ

Explanation:

Given:

mass of water = 81 gram

Initial temperature = 0°C

Final temperature = 100°C

Specific heat of water = 4.184

Find:

Required heat Q

Computation:

Q = Mass x Specific heat of water x (Final temperature - Initial temperature)

Q = (81)(4.184)(100-0)

Q = 33,890.4

Specific heat of water = 33.89 KJ

6 0
3 years ago
True or False: Your blood is a neutral solution.
MaRussiya [10]

Answer:

True

Explanation:

Neutral solutions maintain a pH of 7. Water and human blood are great examples of neutral solutions. Acids mixed with bases can be neutralized and given a pH of 7.

8 0
3 years ago
2. _____ is the distance and direction of an object’s change in position from the starting   a.  Speed b.  Displacement   c.  Ve
Llana [10]
Displacement is the distance and direction of an object's change in position from the starting.
Hence option B is correct.

Hope this helps!
3 0
3 years ago
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