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r-ruslan [8.4K]
3 years ago
14

Name 4 differences between chemical and physical changes​

Chemistry
2 answers:
Korolek [52]3 years ago
6 0

thyroid level.blood levels white and red blood cells .mental state and toxcity

Yakvenalex [24]3 years ago
4 0

Answer:

Chemical changes are irreversible and new product is formed.

Physical changes are reversible and no new product is formed.

Explanation:

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Copper reacts with nitric acid releasing nitrogen dioxide gas. Why is this answer<br>right?​
Contact [7]

Explanation:

Nitric acid reacts with copper according to the reaction: ... 4 HNO3(l) + Cu(s) ==> Cu(NO3)2(s and aq) + 2 NO2(g) + 2 H2O(l) The copper nitrate salt that forms is a deep blue color. The nitrogen dioxide is a maroon vapor.

4 0
4 years ago
A chemical reaction that has a positive δg is best described as
Alina [70]

Answer:

Explanation:

endergonic

A chemical reaction that has a positive ΔG is correctly described as A) endergonic.

5 0
4 years ago
What's the balanced equation for magnesium and hydrochloric acid?
Roman55 [17]
Mg + 2 HCl ------> MgCl₂ +H₂O
6 0
4 years ago
The law of conservation of momentum states that if objects exert forces only on each other, their total momentum is ____________
iren2701 [21]

Answer:

Conserved.

Explanation:

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

Momentum = Mass * Velocity

The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.

This ultimately implies that, the law of conservation of momentum states that if objects exert forces only on each other, their total momentum is conserved.

8 0
3 years ago
Trying it out. help??
Black_prince [1.1K]

Answer:

tell the question also ?

5 0
2 years ago
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