CHEMISTRY MIDDLE SCHOOL

View the table.Which would be the most appropriate headers for column
1 and column 2?
1
sugar
ice
diamond
S
AS
rubber
wax
plastic
column 1 Atoms
column 2. lons
column 1 Crystalline
column 2 Noncrystalline
column 1. Definite shape
column 2. Definite volume
column 1 Viscous
column 2 Nonviscous

Answers

Answer 1
Answer:

Answer:

column 1: they are solids that form crystals.

column 2: Are liquid solutions.

Explanation:

Crystals are solids, some of them can have viscosity like glass.

Liquid solutions, are formed by some ions dissolved in water, so they can have a definite volume and could be a liquid that is nonviscous because they are dissolved in water.

Hope this info is useful.

Answer 2
Answer:

Answer:n creating a table from a dataset that does not have a column and a row, the most important thing that you have to ... The answer to your question is C. column headers.

Explanation:

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Titanium has three common isotopes: 46Ti (8.0%) , 48Ti (73.4%) , 49Ti 5.5%, 50Ti ( 5.3%). What is the average atomic mass of titanium? Work please too!

Answers

you can use its mass number, A , as an approximation of its atomic mass.
In this case, you will have
46
Ti → ma ≈ 46 u

47
Ti →ma≈47 u

48
Ti →ma≈48 u

49
Ti →ma≈49 u

50
Ti →ma≈50 u
Now, the average atomic mass of titanium is calculated by taking the weighted average of the atomic masses of its stable isotopes.
Simply put, each isotope
i
will contribute to the average atomic mass of the element in proportion to its decimal abundance, which is simply the percent abundance divided by
100

The decimal abundances for these five isotopes will be
46
Ti:
8.0/100= 0.080
47
Ti: 7.8/100=0.078

48
Ti: 73.4/100 =0.734
49
Ti: 5.5/100=0.055
50
Ti: 5.3/100=0.053
The average atomic mass of titanium will thus be avg. atomic mass =46 u ×0.080+47 u ×0.078
+48 u ×0.734+49 u × 0.055 + 50 u × 0.053
avg. atomic mass
= 47.923 u

(3 Points)Which statement correctly compares radio waves and microwaves?

A. Radio waves have a higher frequency than microwaves.

B. Radio waves have shorter wavelengths than microwaves.

C. Radio waves have lower radiant energy than microwaves.

D. Only radio waves are used in communication.

Answers

Answer:The correct answer is option C.

Explanation:

Radio waves and microwaves  both are the examples of electromagnetic waves.

Radio waves: These are waves with lowest frequency in the electromagnetic spectrum with longest wavelength.

Microwaves : These are the second lowest frequency waves in the electromagnetic spectrum with wavelength shorter than radio waves.

E=h\nu

E = Energy of an electromagnetic wave

\nu=(c)/(\lambda )

\nu \propto (1)/(\lambda )

E\propto (1)/(\lambda )

\nu = Frequency of the electromagnetic wave

\lambda = Wavelength of the electromagnetic wave

Radio waves with longest wavelength has lower radiant energy than the microwaves.Hence, correct option is C.

True or false. The epicenter of the earthquakr is directly below the focus

Answers

True because imagen the earth's crust the epicenter is in the bottom of the focus
The epicenter is where the Earthquake practically starts from. The epicenter is, in a sense, the focus. But in other words, this is true. 

the particles that make up a rock are constantly moving. however, a rock does not visibly vibrate. why is this?

Answers

Only the particles inside the rock/solid are moving, not the actual rock. 
It is due to a low entropy level in the rock, and also the type of chemical bonds the rock has. 
An example similar to this  one would be diamond. It is made up of carbon bonds. But once you take a (real) diamond out of the ground, it very slowly, not visible to the human eye, yet surely is turning back into graphite. (another substance made by carbon bonds)
i hope this helped.

An 80 kg long jumper in flight accelerates at a rate of 10 m/s^2. What is the force of the long jumper

Answers

Answer:

F = 800 N

Explanation:

Given data:

Mass = 80 Kg

Acceleration = 10 m/s²

Force = ?

Solution:

Formula:

F = m × a

F = force

m = mass

a = acceleration

Now we will put the values in formula:

F = m × a

F = 80 kg × 10 m/s²

F = 800 kg.m/s²

kg.m/s² = N

F = 800 N

What technological development led to the discovery of the existence of subatomic particles?

Answers

Answer:

Thomson had discovered the first subatomic particle, the electron. Six years later Ernest Rutherford and Frederick Soddy, working at McGill University in Montreal, found that radioactivity occurs when atoms of one type transmute into those of another kind

Explanation:
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