Salt acts as an antifreeze.
a. True
b. False

Answers

Answer 1

Answer:

Answer:

It's true

Explanation:

An example can be observed when the people add salt on the road surface to avoid icing. The salt water mixture is frozen at approximately a temperature of -21°C and not at a temperature of 0°C as it would be in the case of water. Salt when dissolved in water releases heat, thereby contributing to defrost ice. This is the same principle that is used for car antifreeze, which is to lower the freezing point.

Answer 2

Answer: A. I think that is the a answer. Not to sure

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Which of the following mixture types is characterized by the settling of particles?a. solution
b. suspension
c. colloid
d. hydrate

Answers

The answer is B. Suspension. Suspension mixtures are composed of two or more materials mixed together wherein the solute particles are usually larger than those found in a solution or colloid. In cases of solid-fluid suspension mixtures, the solid solute particles tend to settle at the bottom of the mixture after some time.

The smallest particle of an element that retains the chemical identity of that element is a/an A. atom.
B. compound.
C. molecule.
D. mixture.

Answers

The answer is A. atom. An atom has nucleus and electrons and its own characteristics. While compound and molecule are consists of different atoms. And mixture is consists of different compounds.

A. ATOM is the correc answer

The mass of a proton is equal to the mass of?

Answers

It is about equal to the mass of the neutron. So, most people just say that they have the same mass.

*Hope that helps and enjoy Brainly :)*

The answer would be neutron. Well, they do not have the exact same mass, only a difference of about 0.98 or even less than that. So they are counted as equals.

Why is the nitrogen group considered a mixed group?

Answers

In periodic table, metal, nonmetal and metalloids are mixed in group is know to be mixed group. Nitrogen group is mixed.

Define periodic table?

The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number. There are five parts in periodic table Component Groups, Ionic Bonds, element periods, and so forth, ionic bonds and Bonds made of metal.

The nitrogen group is said to be mixed because it is contains metal, nonmetal and metalloids. Elements can be classified into metal, non-metal, and metalloids. Nitrogen group mixed group contains the nonmetals nitrogen (N), and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metals bismuth (Bi).

To find more about elements, refer the link below:

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Explanation:

The nitrogen group is considered mixed because it is composed of elements of equally different classifications of metal, non-metal, and metalloids. The group contains the nonmetals nitrogen (N), and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metals bismuth (Bi) and Moscovium (Mc).

The force of attraction that the earth exerts on all objects is called

Answers

The force of attraction that the earth exerts on all objects is called gravitational force. The gravitational force is the force that has the property of attracting any object having a mass. Without this gravitational force it would not have been possible for anything to remain on earth. Everything would start floating without the gravitational pull of earth. There are actually four kind of forces that are considered in physics. They are the strong force, weak force, gravitational force and the electromagnetic force. It is absolutely true that every object is pulling other objects due to the forces present in nature.

What is an isotope? a. A form of an element with a different number of electrons c. A form of an atom with a different amount of orbitals b. A form of an atom with a different number of protons d. A form of an atom with a different number of neutrons

Answers

An isotope is an element with different atomic mass.

We have,
Atomic mass = no. of protons + no. of neutrons
Now, we know, protons never change.....so the only thing that changes is neutrons if we want different atomic mass.

Soooooooo,

The answer is "D. A form of an atom with a different number of neutrons"

The answer is not A. because same element with different number of electron is ion.

The answer is not B. because if it has different number of proton....it is going to be a different element. Just like our fingerprints, we can say that protons are fingerprints of element. No. of protons never change.

The answer is not C. because again talking about electrons.

Answer:

D. A form of an atom with a different number of neutrons.

Explanation:

An Isotope has an equal number of protons but different numbers of neutrons in their nuclei.

Hope it helped!

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Why do minor parties have difficulty succeeding in the United States electoral system? A. tend to focus on only a single issue B. quickly join forces with the wrong party C. views are usually tied to strict religious doctrine D. seldom are given the respect from foreign officials they need to get elected

Two very stable compounds, Freon-12 and Freon-14, are used as liquid refrigerants. A Freon-12 molecule consists of one carbon atom, two chlorine atoms, and two fluorine atoms. A Freon-14 molecule consists of one carbon atom and four fluorine atoms.81 In the space in your answer booklet, draw a structural formula for Freon-12. [1] 82 To which class of organic compounds do Freon-12 and Freon-14 belong? [1]