Why do chemical properties change?

Answer:

because they undergo physical and chemical changes

Answer:

of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change.

How would you describe a dwarf planet?
It is too big to be a planet, but too small to be an asteroid, meteor, or other space object.
It is too small to be a planet, and too small to be an asteroid, meteor, or other space object.
It is too small to be a planet, but too big to be an asteroid, meteor, or other space object.
It is too big to be a planet, and too big to be an asteroid, meteor, or other space object.

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A solid sample that has a mass of 2.3 grams. The solid sample has a volume of 2.0 cm. What is the density of this sample?

help me pls someone plss???

Pedigree: Amoeba sisters ( please help asap)
The Roman Numerals represent _____________.

_____________ ______________ ______________, if present, will lead to the expression of dominant traits. Recessive alleles only are expressed if dominant alleles are not ______________.

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

How would you compare Uranus (a Jovian planet) to Earth (a terrestrial planet)?
Earth is larger than Uranus.
Uranus is larger than Earth.
They are the same size.

Measuring Physical Properties Lab Report
Instructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below. You will submit your completed report.

Name and Title:
Include your name, instructor's name, date, and name of lab.


Objective(s):
In your own words, what was the purpose of this lab?


Hypothesis:
In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.


Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome.

Using the summary questions, clearly define the dependent and independent variables of the experiment.


Data:
Record the results of each of your physical property tests in the table below.

Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10)
Magnetism
(number of paper clips)
Thermal Conductivity
(W/(m·K))
Electrical Conductivity
(x107 S/m)
Density
(g/cm3)

Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
What building material did you use to build your house? Did your results support or fail to support your hypotheses?
What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures?
Why wouldn’t you choose wood or aluminum for the latches on your house?
Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material.
Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather. What building materials do you believe would work well to build a home in that area? Explain why you chose these materials.

What do the elements within a "period" have in common? (pick one)

A. same number of electrons
B. similar chemical properties
C. equal number of electron orbits
D. equal atomic number

I got 21 points plz help

What is a chemical change?
What are some examples of chemical changes?
What is the essential difference between a physical change and a chemical change?
Why do physical properties change?

Is a change in matter that produces one or more substances

Chemical change
Physical change
Chemical reaction

Based on The Riddle of the Rosetta Stone, what influence did many people believe Thomas Young had on the findings of Jean-François Champollion?

Many people believed Champollion continued his research because of Young’s encouragement.
Many people believed Champollion learned everything he knew about hieroglyphs from Young.
Many people believed Champollion copied Young’s idea that hieroglyphs represented sounds.
Many people believed Young was the first to inspire Champollion to decipher the writings on the Rosetta Stone.

George splits a bagel in half and places both sides of the bagel in a toaster. He turns on the toaster, and within a minute the bagel pops out, brown and evenly toasted. What type(s) of heat transfer toasted the bagel?
A. conduction
B. radiation
C. convection
D. conduction and convection

1.Which of the following has the fewest number of total atoms?Immersive Reader
(1 Point)
C₂H₆O
CH₃CH₂Br
C₄H₁₀O
2.In which of these compounds are there twice as many hydrogen atoms as oxygen atoms?
(1 Point)
H₂SO₄
HBrO₃
H₂O
3.How many oxygen atoms are there in the products of this equation?

C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O
(1 Point)
36
18
8
13
4.Ammonium nitrate, NH₄NO₃ , is a chemical used to fertilize soil. How many total atoms are represented in this chemical formula?
(1 Point)
9
8
14
7

Why do chemical properties change?
What do the prefixes exo- and endo- mean?
What happens to heat in an exothermic reaction?
What happens to heat in an endothermic reaction?

Which of the following is NOT a region of the Sun? a Deuterium nucleus b The core c The convective zone d The visible surface

. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose. Which body systems should the doctor test in order to find out whether Guillermo’s cells are getting enough oxygen and glucose and why? (Sentence starter: The body systems Guillermo should have tested are .

Sixth-grade students conduct a laboratory experiment investigating the flow of thermal energy. They place a sealed plastic bag filled with water at 60°C into a beaker filled with an equal amount of water at 80°C. They then put the beaker with the plastic bag in an insulated container.

Based on the flow pattern of thermal energy, what can students predict will most likely happen in about an hour?



A. Thermal energy will flow from the cooler water in the plastic bag to the warmer water in the beaker so that the temperature of the water in the beaker will be 60°C and the temperature of the water in the plastic bag will be 80°C.


B. Thermal energy will flow from the warmer water in the beaker to the cooler water in the plastic bag so that the temperature of the water in the plastic bag will be 80°C and temperature of the water in the beaker will be 60°C.


C. Thermal energy will flow from the warmer water in the beaker to the cooler water in the plastic bag so that the temperature of the water in both the plastic bag and the beaker will be 70°C.


D. Thermal energy will flow from the cooler water in the plastic bag to the warmer water in the beaker so that the temperature of the water in both the beaker and the plastic bag will be 70°C.

My science teacher trying to be cool

What is a difference between a dwarf planet and a major planet?
Dwarf planets do not travel around the Sun.
Dwarf planets are much closer to the Sun.
Dwarf planets do not have enough mass and gravity to be nearly round.
Dwarf planets have not cleared other objects out of their orbital paths.

The amount of water vapor in a given volume of air is ______________ .The amount of water vapor in the air at any one time depends on ______________ . Warmer air holds ______________ water thancooler air. Clouds form when humidity is ______________ and thetemperature is ______________ . ______________ humidity is definedas the amount of water vapor in the air ______________ by the amountthat would have to be present in the same air to form a ______________ or condense on a surface. ______________ is related to the humidityof the previous day. The air temperature at which water vapor in the air ______________ onto cool surfaces is the dew point.
The words:
humidity
temperature
more
high
low
relative
divided
cloud
dew
condenses
if u answer this I sware u'll be brainliest bc this is so important, thank u u r soo kind and much appreciated if u please
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I need an example of Nuclear Chemistry.
Any suggestions...​

Describe the function of organelle X and explain how it is important to the survival of the cell. In your answer, be sure to:

PLEASE HELP WILL GIVE BRAINLIEST

Why does Mercury have almost no atmosphere?
Mercury spins on its axis too fast to have an atmosphere.
Radiation from the Sun blows the atmospheric particles off into space.
Mercury's gravity is too weak to hold an atmosphere.
Mercury orbits the Sun at such high speed that the atmosphere is blown away.

How are dwarf planets and major planets similar? (Choose all that apply)
They both travel through space in a path around the Sun.
They both have enough mass and gravity to be nearly round.
They both travel around the Sun at the same distance.
They both have other objects in their orbit.

By which mechanism does older oceanic rock move at a ridge?

A) New molten material rises and moves the rock

B) The ridge subducts and moves the rock

C) Continents drift and move the rock.

D) Magnetic forces move the rock.

What are the characteristics of Mercury? (Select all that apply.)
Mercury has less gravity than the Earth.
Mercury has many rings visible from Earth.
Mercury’s year is similar to that of Earth.
Mercury is the closest planet to the Sun.

The amount of water vapor in a given volume of air is ______________ .The amount of water vapor in the air at any one time depends on ______________ . Warmer air holds ______________ water thancooler air. Clouds form when humidity is ______________ and thetemperature is ______________ . ______________ humidity is definedas the amount of water vapor in the air ______________ by the amountthat would have to be present in the same air to form a ______________ or condense on a surface. ______________ is related to the humidityof the previous day. The air temperature at which water vapor in the air ______________ onto cool surfaces is the dew point.
word bank
humidity
temperature
more
high
low
relative
divided
cloud
dew
condenses
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PLS :) I'm cheering 4 u, to help me for Brainliest :)

Which statement best compares segmented worms and roundworms?

Some segmented worms have setae, but roundworms do not.
Some roundworms have setae, but segmented worms do not.
Segmented worms have sense organs, but roundworms do not.
Roundworms have sense organs, but segmented worms do not.