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American National Curriculum

High School

Chemistry

Structure and Properties of Matter

1 1.1.4 Quiz The Scientific Process Question 6 of 10 Which of

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1 1.1.4 Quiz The Scientific Process Question 6 of 10 Which of the following would be a testable hypothesis for an experiment that compares the health of salmon raised in fish farms to salmon caught in the wild?

Eight wild saimon and eight saimon from a fish farm are examined for diseases.
Do salmon raised in fish farms experience more diseases than wild saimon?
If a salmon is raised in a fish farm, then it may be less healthy than a wild saimon.
Salmon living in the wild experience fewer diseases than saimon raised in fish farms.

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Students who ask this question also asked

Question 1

How do you find the molar mass of argon?

Topic:

Structure and Properties of Matter

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Question 2

1. Define plasical and chemical properies, provide three examples of each, discuss their reversibility, and explain fondamental differences between them Physical properties is a process whereby properties can be observed without changing its chemical composition. Ixamples are volume,color and molecular weight, while chemical properties is a defined as the characteristics of a particular substance that can be observed only after changing its chemical reaction xubstance I sample, heat of combustion, its reactivity and its flammability and pll value. The fundamental diferences between pliysical and chemical properties are as follows (a) Chemical properties are related to chemical boumd of the substance while physical are not In chemical properties, the chemical identify of a substance are been changed while pliysical preperties are not. Chemical properties use to infer the the reaction of substance while in physical propertics it is enly describes the appearance of the substance. 2. Density is a physical preperty of a molecule that's measured as mass per unit volume. Given that density is usually cepressed in the units of

g / cm^{'}

, calculate the density of a cube of plastic that has a mass of

2331 g

and an edee length of

1.500 cm

(volume of a cube is

Y = P

). Be sure to show all steps in the process and include units throughout the problem. Density is said to be the ratio of mass of volume to volume. Mass of the cube

= 2331 g

Edge length

(1) = 1.500 cm

Volume

(v = 1^{'}) = 1. 5^{'} = 3.375 cm^{3}

so we have that the density Density

=

mass/ volume

= \frac{2.331}{3.375 cm ^{3}} = 0.691 g / cm^{3}

3 Two hiquids are in a graduated cylinder - Liquid

A

has a density of

1.004 g / cm^{'}

and Liquid

B

has a density of

06223 g / cm^{3}

. Assuming that they do NOT mix, which liquid is on top and which hiquid is on bottom? Where would you expect to find the plastic cube from Question 22 if it is dropped into the gaduated cylinder with these two liquids? Liquid

A

density is

= 1.004 g / cm^{'} = 1.00 4_{g} / cm^{3}

Liquid B density is

= 0.622 3_{v} / cm^{3}

Liquid

A

seems to be more denser than that of liquid

B

,so liquid

B

would float when mixed with liquid B Therefore, according to the experiment liquid

B

will be on the up while one in liquid

A

will be at the down If it is dropped into the graduated cylinder with these two liquids. The density of

A

is more than that of

B

. liquid

B

would be on the top while the cube and liquid in

A

will be at the bottom. 4. Three quantum numbers are derived from Schrodinger's equation that describe the probability of finding an Lectron around a nucleus: the principal quantum number, the angular momentum quantum number, and the magnefic quantum number. Explain each quantum number, including associated shapes, numbers, lenters, and values in your own words. Principle quaritum number is deseribes as the size of the orbital and the main energy level. It is represented by n. where

n = 1, 2, 3, 4 \dots

stand for K,L, N shell and so on. Angular momentum quantum number is deseribes the shape of the orbital. Is is represented as '

I

', ita value ranges from 0 to

(n - 1)

for ' 1 '

= 0, 1, 2.3 \dots

. the orbitals are s, p, d, f... Magnetic Quantun Number it deseribe the orientation of the orbitals. Its quantum number value range when

1 - 2

, the value will be from

- 2, - 1, - 0) + 1

, +2 5. Write the full electron configuration for phosphorus, atomic symbol P Phosphorus clectron configuration.

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}

, and it start from this confinguration notation heips to provide casy way to its to write and communicate how electrons are been arranged around the nucleus of an atom. Is, to 25,

3 s

up to 58 . 6. Identify if phosphorous is paramagnetic or diamagnetic and explain why. Phosphorus is paramagnetic because it has 3 unpaired electrons in their outemost shell which gives phospho the properties it has 7. Compare and contrast the alkali metals and the alkaline earth metals by filling in the table below.

Topic:

Structure and Properties of Matter

View solution

Question 3

What is an atom that gains or loses an electron and has an electric charge called?

Topic:

Structure and Properties of Matter

View solution

Question 4

What is the approximate mass of a neutron, in atomic mass units?

Topic:

Structure and Properties of Matter

View solution

Question Text	1 1.1.4 Quiz The Scientific Process Question 6 of 10 Which of the following would be a testable hypothesis for an experiment that compares the health of salmon raised in fish farms to salmon caught in the wild?
Topic	Structure and Properties of Matter
Subject	Chemistry
Class	High School

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