Compare and contrast physical property and chemical property

1 answer:

amm18123 years ago

3 0

Physical properties are properties that change form but not it's chemical compound

chemical properties are properties that change in chemical substance like burning tearing

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Which of the following is an example of how a scientist might use a model?

tiny-mole [99]

I am thinking it is c) A microscope is used to magnify a group of cells on a slide.

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3 years ago

4HF(g)+SiO2(s)→SiF4(g)+2H2O(l)

Alecsey [184]

<span>Gallium-72 that is what i got when i did the math for it</span>

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4 years ago

This equation shows a ____ refer to this summary equation of photosynthesis to complete the sentences about chemical bonds and r

coldgirl [10]

The balanced chemical equation representing the process of photosynthesis is:

$6 CO_{2} +12H_{2}O-->C_{6}H_{12}O_{6}+6O_{2}$

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3 years ago

The isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it.

xxTIMURxx [149]

Answer:

Gallium-72

Explanation:

The elements are identified by the number of protons of the atom, which is its atomic number.

In this case the number of protons 39 (atomic number 39) permit you to identify the element as gallium.

Now, to identify the isotope you tell the name of the element and add the mass number.

The mass number is the sum of the protons and the neutrons

In this case, the number of neutrons is the original 39 plus the 2 added suddenly, i.e. 39 + 2 = 41, so the mass number is 31 + 41 = 72

Therefore, the isotope is gallium - 72.

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3 years ago

Does anyone know this!?

saul85 [17]

Answer:

I don’t know this answer sorry

Explanation:

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3 years ago