definition physical property can be observed or measured without changing the composition of matter
examples
color
density
volume
mass
definition
chemical A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion
examples flammability, toxicity, acidity, reactivity
pretty much the difference is is that chemical changes its chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance Physical change does not do that
3. Which element is a nonmetal? *
1 point
Nitrogen (N)
Iron (Fe)
Titanium (Ti)
Potassium (K)
A solid is held in shape by strong forces.
Ok thanks for the valuble info.
Help! I am in a hurry! Will get brainliest if correct!
Answer:
nonmetel
Explanation:
Answer:
Its a non-metal
Explanation:
Elements that tend to gain electrons to form anions during chemical reactions are called non-metals. These are electronegative elements. They are non-lustrous, brittle and poor conductors of heat and electricity (except graphite). Non-metals can be gaseous, liquids or solids.
Isopentyl acetate is the molecule largely responsible for the aroma and taste of bananas. It is made up of carbon, hydrogen, and oxygen. Combustion of a 3.256-g sample of isopentyl acetate produces 7.706 g CO2 and 3.156 g H2O. Using these results, what is the correct empirical formula for isopentyl acetate?
Answer:
Explanation:
7.706 g of CO₂ will contain 12 x 7.706 / 44 g of C
= 2.1 g of C .
This will be contained in 3.256 g of isopentyl acetate
3.156 g of H₂O will contain 2 x 3.156 / 18 g of H
= .351 g of H
This will be contained in 3.256 g of isopentyl acetate
Rest will be oxygen
amount of oxygen in 3.256 g of isopentyl acetate
= 3.256 - ( 2.1 + .351 )
= .805 g
ratio of C , H , O in isopentyl acetate
= 2.1 g : .351 g : .805 g
2.1 / 12 : .351 / 1 : 0.805 / 16 ratio of moles
= .175 : .351 : .05 ratio of moles
= 3.5 : 7.02: 1
= 7 : 14 : 2
empirical formula of isopentyl acetate
= C₇ H₁₄ O₂ .
Calculate the average atomic mass of element Q, if the isotopic composition of element Q is as follows: Q-107 has an abundance of 78%, and Q-110 has an abundance of 22%. Type your answer rounded to two decimal places.
Answer:
5
Explanation:
If 0.484J of heat is added to 0.1372g of water, how much will the temperature increase?
0.263 °C
0.927 °c
0.843 °C
0.460 °C
Answer:
ΔT = 0.843 °C
Explanation:
Given data:
Heat added = 0.484 J
Mass of water = 0.1372 g
Temperature increase = ΔT = ?
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Specific heat capacity of water is 4.184 j/g.°C
Now we will put the values in formula.
0.484 j = 0.1372 g × 4.184 j/g.°C× ΔT
0.484 j = 0.574j/°C× ΔT
ΔT = 0.484 j / 0.574j/°C
ΔT = 0.843 °C
Using dimensional analysis, how many kilometers are there in 34 inches?
Answer:
There are many ways to figuring this out: you could use a ruler, a calculator or scrap paper.
Explanation:
This is not an actual flat out answer, but it’s helpful methods to getting the answer the next time you are stuck. Hope you are having a nice day. Bless your heart and soul.
What is a rule for determining the mass number of an atom or ion?
Answer:
The mass number of the atom is equal to the sum of the number of protons and neutrons in the nucleus
Explanation:
Each proton and each neutron weigh one amu( atomic mass unit), adding together the neutrons and protons and multiplying by 1 amu you get the mass of an atom
1 You place a 28.95-g piece of gold in a 10-ml graduated cylinder. The level of the water rises 1.50 mL. What is the density of gold?
Answer:
What mass of silver will raise the level of the water in the graduated cylinder 1.50 mL? (Ans) 28.95 g / 1.50 mL = 19.3 g/mL (The gold's density)
19.3 gm/ml³ is the density of gold .
What do you mean by the density of the substance?Density, mass of a unit volume of a material substance. Density of a substance tells how close the particles of a substance are packed.
The formula for density is D = M/V, where d is density, M is mass, and V is volume.
Density is commonly expressed in units of grams per cubic centimeter.
The SI unit of density is kilogram per cubic meter (kg/m3).
It is also represented in the c g s unit of grams per cubic centimeter (g/cm3).
To calculate density of gold (here):
Given,
Mass of gold=28.95 gm
Volume of water=1.50 mL
Density=?
Density =Mass/Volume
Density=28.95/1.50
Density=19.3 gm/ml³
Hence, 19.3 gm/ml³ is the density of gold .
Learn more about density ,here:
https://brainly.com/question/15164682
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How do atoms combine to make different types of matter ?why? (Help ASAP)
The volume of a fixed sample of a gas is 150 mL at 25°C , at what temperature will its volume increase to 350 mL ?
Answer:
it is 52.7
Explanation:
so when it is 30 the degree is 5°
when it is 60, the degree is 10°
when it is 90, the degree is 15° and so on...
Answer:
T₂ = 695.33 K
Explanation:
Given data:
Initial volume = 150 mL
Initial temperature = 25°C (25+273 = 298 K)
Final temperature = ?
Final volume = 350 mL
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
T₂ = V₂T₁ /V₁
T₂ = 350 mL × 298 K / 150 mL
T₂ = 104300 mL.K / 150 mL
T₂ = 695.33 K
The tendency of an atom to attract electrons to itself is ionization energy. effective nuclear charge. electron affinity. electronegativity.
Answer:
electronegativity
Explanation:
Answer:
THe tendoncy is electronegstivity
Explanation:
Im a big brain person
WILL GIVE POINTS AND BRAINLIEST
Question:
Number of H− ions in 5.22 g of SrH2
Answer:
moles H = 2 x 0.0649=0.130
ions = 0.130 x 6.02 x 10^23=7.81 x 10^22
Explanation:
An ionic compound is
A.a salt
B.held together by a transfer of electrons
C.composed of anions and cations
D.held together by sharing of valence electrons
Consider the equation:
Ca+O2→CaO
What needs to be done in order to balance the equation?
Place a 2 in front of the Ca and the CaO.
Place a 2 in front of the O2 and the CaO.
Place a 2 in front of the CaO only.
Place a 2 only in front of the Ca.
define open and closed circuit
Answer:
An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled conditions is called a switch.
what is the density of aluminum if you have a piece of aluminum that is 10.5cm x 10.5cm x 0.1cm and has a mass of 29.8 grams?
Answer:
2.7g/cm³
Explanation:
Given parameters:
Dimension of the aluminum = 10.5cm x 10.5cm x 0.1cm
Mass of the aluminum = 29.8g
Unknown:
Density = ?
Solution:
Density of a substance is its mass per unit volume;
Mathematically;
Density = [tex]\frac{mass}{volume}[/tex]
Volume of the aluminum = 10.5cm x 10.5cm x 0.1cm = 11.025cm³
So, insert the parameters and solve;
Density = [tex]\frac{29.8}{11.025}[/tex] = 2.7g/cm³
Element X reacts with chlorine to form an ionic compound that has the formula XCl₂. To which group on the Periodic Table could element X belong?
Answer:
Group 2 is the correct answer.
Explanation:
Chlorine has a charge -1. It means that X is +2 so that the formula is XCl2.
GIVING BRAINLY, FOLLOW, 5 STARS AND HEARTS
which of the following is NOT a characteristic of hot water heating systems?
Answer:
The one on the top,'' As the water cool, it is returned to the boiler where it is heated,''
Explanation:
Use the periodic table to write the electron configuration of gallium (Ga).
Drag the labels to the correct locations on the image. Each label can be used more than once.
Answer:
Explanation: It’s the correct answer on Edmentum.
HELP!
A. W
B. X
C. Y
D. Z
Answer:
B
Explanation:
To pass a test with 15 questions how many can I get wrong?
Answer:
You can get 7 answers wrong.
Explanation:
Let's calculate the average
[tex]\frac{15}{2} \\\\=7.5[/tex]
So if you correctly answer 8 -15 (7.5 is approximated to 8 )questions correctly you will pass.
So you can get 7 answers wrong.
I will pick the brainiest answer! Thanks! :)
1. What is volume displacement? Why would you use this method?
2. What is density? What happens to things that are denser? What happens if they are less dense?
Answer:
1. The volume of displaced fluid is equivalent to the volume of an object fully immersed in a fluid or to that fraction of the volume below the surface of an object partially submerged in a liquid. The weight of the displaced portion of the fluid is equivalent to the magnitude of the buoyant force.
Why would you use this method?
So it can be used to accurately measure the volume of the human body and other oddly shaped objects by measuring the volume of fluid displaced when the object is submerged.
2. Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.
What happens to things that are denser?
Students should realize that if an object weighs more than an equal volume of water, it is more dense and will sink, and if it weighs less than an equal volume of water, it is less dense and will float.
What happens if they are less dense?
The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in.
Which of the following is the best insulator?
Group of answer choices
copper
aluminum
gold
wood
Answer:
wood
Explanation:
hope this helps! good luck on ur test :)
Answer:
Wood
Explanation:
What is the value of index fossils to the fossil record?
The diagram below shows what happens to an atom of uranium-235 when bombarded by a neutron. Which isotope is represented by X in the diagram?
Answer:
X represents barium - 141 nucleus.
Written as: (141, 56) Ba
Explanation:
In nuclear fission reaction, due to the fact that the process produces more neutrons, a nuclear chain reaction can possibly occurr. Now, a chain reaction is a one whereby the material that begins the reaction will also be one of the products and it can start another reaction.
Now, for the nuclear chain reaction for the fission of uranium-235, its nucleus absorbs a neutron after which it splits into a krypton - 92 nucleus and a barium - 141 nucleus. Thereafter it releases three more neutrons.
Thus, X is the image represents barium - 141 nucleus.
(141,56) Ba
What is the formula for mass number?
Answer:
the formula for mass number is "mass number = protons + neutrons".
How can electronegativity be used to explain the reaction we see in terms of the numbers and types of bonded being formed in lithium?
Explanation:
Lithium is an electropositive element that readily loses electrons.
Oxygen is electronegative and it will readily accept electrons.
Due to this significant electronegativity differences between the two species they form electrovalent or ionic bonds between them.
2atoms of Li lose two electrons:
Li → Li²⁺ + e⁻
Lithium isoelectronic with helium
For oxygen;
O + 2e⁻ → O²⁻
Oxygen is isoelectronic with Neon
Two ions of the lithium combines with the oxygen to form the bond;
4Li + O₂ → 2Li₂O
The electrostatic attraction between the two ions forms the ionic bond
Sorry, I have another question! Please answer as soon as possible:)
Answer:
I think its b
Explanation:
Sorry if wrong! Hope this helps tho! maybe mark me brainliest if I am?
Why are supergiant so bright?
Because supergiants are so massive, the core temperature gets much hotter than in giants, so supergiants can fuse elements heavier than hydrogen and helium. But to support their tremendous mass, supergiants burn up their fuel much more quickly.
Answer:
because the core tempature gets much hotter.
Explanation:
so supergiants can fuse elements heavier than hydrogen and helium. But to support their tremendous mass, supergiants burn up their fuel much more quickly.