Chemistry High School

Which of these is a chemical property of aluminium

Answers

Answer 1

Answer:

Option 1

Explanation:

Density of 2.70 g/cm^-3

Answer 2

Answer:

Explanation:

For it’s actually ( Aluminium is highly reactive )

Related Questions

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a chemical change. Explain your answer.

Answers

Explanation:

Answer. What comes in contact with Sodium Hydroxide to form soap and glycerine it is a chemical change because you cannot reverse this change and also the products formed are the results of a chemical reaction

Answer:

Its a chemical change because its property is changed.

Explanation:

Looking at the periodic table, which of theses elements has the smallest atomic radius (A. Sodium B. potasaium C. Hydrogen D. LithIum)

Answers

Answer:

The answer is C. Hydrogen

Explanation:

It has a radius of 53 pm calculated.

What percent of the universe's age is the first 400,000 years?

Answers

Answer:

the globuler cluster

Explanation:

hope this helps maybe next time show anwsers

Nuclear chemistry findings contradict __________________ theory of indivisible atoms.

Answers

Answer:

atomic theory

Explanation:

What are some uses we might have for standing waves?

Answers

any waves traveling along the medium will reflect back when they reach the end.

Identify the error in the following statement:
A scientific theory is well-substantiated, fact-based, and unchangeable.
O A. Scientific theories can change as scientists continue to test ideas and gather evidence.

Please help me on this! I’ll mark you the brainliest
B. The statement is describing a hypothesis rather than a scientific theory.
O
C. A scientific theory is not well-substantiated.
D. A scientific theory is not fact-based.

Answers

The answer is A scientific theories can change as scientist continue to test ideas and gather evidence

true or false forming a hypothesis is the first strip of the scientific method

Answers

Answer:

True (probably)

Explanation:

I think it's true since creating hypothesis is the start of almost every scientific activities that we usually know. Please correct me if I'm wrong.

It’s False!!!

The statement above is false^

Explanation: forming a hypothesis is NOT the first step of the scientific method

What elements are involved with fission

Answers

Answer:

Several heavy elements, such as uranium, thorium, and plutonium, undergo both spontaneous fission, a form of radioactive decay and induced fission, a form of nuclear reaction.

Mostly serveral heavy elements

1. Which of the following substances are elements?
(a) bronze
(b) tin
(c) chromium
(d) solder
(e) propane
(1) arsenic
(g) nickel

Answers

B, C, G and F or 1 is what you put

which can occur in a physical changen?

Answers

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

If 5,800 j of energy are applied to a 15.2 kg piece of lead, by how much does the temp change if the specific heat of lead is 0.128

Answers

Answer:

The answer will be 2.98K

Explanation:

Using the formula:

Q = mc∆T

Q= 5,800 (heat in joules)

m= convert 15.2kg to g which is 15200g (mass in grams)

c= 0.128 J/g °c (Specific heat capacity)

∆T= what we need to find (temperature change)

5800J = 15200g x 0.128 x ∆T

= 2.98K

help me please i have it due soon

Answers

Answer:

Explanation:

I think it is B. That is because when you are falling, your just going to fall faster and faster.

I hope this helps!

Answer:

Explanation:

The third force the jumper experiences is a spring force due to the bungee cord. The amount that the bungee cord pulls back on the jumper depends on how far the cord has been stretched, i.e. the farther the jumper has fallen, the more the cord pulls back on him or her.

What group will elements in the 7th column bond to?

Answers

Deez Neutz..............Group 1

What did electrons from the ionized air do to the oil drops?

Answers

Answer:

The famous oil drop experiment exploits that fact that an oil drop in an electronic field will get negative charge accumulation which can be balanced and observed in order to determine the charge of an electron.

What part of the sun do we see from earth?

Answers

Answer:

photosphere

Explanation:

photosphere

There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere

Answer:

Explanation:

Yes, that's right a layer of the sun is called Corona

Coincidence, I think not

A Solution is a mixture of two or more substances_____
O a in water
O b. seperate from one another
O c in the same phase
Od come to room temperature

Answers

Answer:

In the same phase

Explanation:

Because when you make a solution you have to keep them in the same phase or you will oof.

why is the temperature different in different places around world

Answers

Answer:

it is because they are placed geographically different.

7. Compared with our'Sun, the star Belelgeuse is
smaller, hotter, and less luminous
smaller, cooler, and more luminous
larger, hotter, and less lumulous
larger, cooler, and more luminous

Answers

Answer:

Larger, cooler, and more luminous.

Betelgeuse is red in color, and that means that the surface of it is cooler than the sun (bluish white is hottest, and red is lowest). It is also common knowledge that it is larger, so the correct option would be D. Hope this helped :)

Which two formulas represent compounds?
A. Ag
B. HCI
C. H2
D. NaCl

Answers

Answer:

it is A and B

Explanation:

A and b are Sodium chloride and Hydrogen chloride which are both compounds.

A compound is always made up of the same ____ in the same proportions.

Answers

Answer:

elements

Explanation:

A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds

Which substance can be decomposed by chemical means? a. calcium b. argon c. sodium chloride d. aluminum

Answers

Amonia? But I don’t see that being an answer choice. I found this. I hope it helps

How many kilograms does 300 cg of cheese weigh?

Answers

Answer:

300 centigrams of cheese would weigh 0.003 kilograms.

Explanation:

1.As with any grid, the periodic table has ________ (left to right) and __________ (up and down).
2.Every row is called a ___________.
3.All the elements in the same period have the same number of _______.
Each column is called a __________.
4.The elements in each group have the _________ number of electrons in the outer orbital (or valence electrons).
5.Noble gases and helium are considered “happy” because their ______________ shell is ___________.

this was not a multiple-choice its about the periodic table

Answers

Answer:

rows and columnsperiodatomic orbitalsvalence electrons

4.similar properties

5.electrons are very reactive

the outermost

Which percentage is in the appropriate range for a snack to be considered a “good source” of nutrients?

15 percent

35 percent

40 percent

50 percent

Answers

I think 35 percent. Hope this helps!

Answer:

Explanation:

what method of cleaning tools and equipment do you follow or apply?

Answers

I clean with a rag wdym

1 point
QUESTION 5: What happens if you reset and place the refrigerator instead
of the wooden box with an applied force fo 200 Newtons for about 3
seconds? *
O The speed of the skateboard increases compared to the wooden box
O The speed of the skateboard decreases compared to the wooden box

Answers

Answer: The speed of the skateboard decreases compared to the wooden box

Explanation: well, umm... if you placed a refrigerator on a skateboard... that will be difficult to move, if anything it will brake the board!

A wooden box is much lighter than a refrigerator

Based on the physical properties of elements on the periodic table, which of the
following elements will most likely act as both a conductor and insulator? *
Aluminum
O Sulfur
O Copper
Silicon

Answers

Usad fact copper and sulfur and silicon insulator

What is the mass of a hydrogen atom?

Answers

Answer:

1.00784 u

Explanation:

Answer:

1.00784 u

Explanation:

hydrogen atomm

Which of the following factors contributes to the relatively greater atomic size of the higher atomic number elements within a particular family of the periodic table?
a. greater number of energy levels b. larger nuclei
c. greater number of protons d. smaller number of valence electrons

Answers

C. Greater number of protons. Each element has a different number of protons, which is what makes them different, and is how we identify them

Heat capacity of a material is dependent upon the material's mass.
True or false?

Answers

Hello

Answer:

True.This quantity is known as the specific heat capacity (or simply, the specific heat), which is the heat capacity per unit mass of a material. Experiments show that the transferred heat depends on three factors:

(1) The change in temperature,

(2) the mass of the system.

(3) the substance and phase of the substance.

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