March 23, 2017

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Number of results: 46,621

Science (atoms) 8th grade
Chlorine has an average atomic mass of 35.45 amu. The 2 naturally occurring isotopes of chlorine are chlorine-35 and chlorine-37. Why does this indicate that most chlorine atoms contain 18 neutrons?
January 15, 2009 by Twilight lover

8th grade Science
How does the behavior of atoms and molecules differ between solids liquids and gasses?
March 15, 2008 by Zeli

Science (atoms) 8th grade
What is the usual state of matter for covalent compounds? Ionic compounds? What is the smallest particle for each?
March 3, 2009 by Twilight lover

science (8th grade)
Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content. Please do not double post.
September 13, 2006 by tonya

8th grade chemistry
which of the following molecules does not contain 5 atoms? A. CaCO3 B. Mg(OH)2 C. NaHCO3 D. Fe2O3
October 31, 2013 by Anonymous

How many atoms of carbon are needed to produce 0.45 mol Al? 3C + 2Al2O3 4Al + 3CO2 A. 2.6 × 1026 atoms B. 9.7 × 1024 atoms C. 3.0 × 1022 atoms D. 2.0 × 1023 atoms
August 19, 2016 by megan

8th Grade
Me and my friend are making our own 8th grade binder, you know like writing down planns for our 8th grade year. Here are the sections: - To-Do-List - Doodles (if you are bored) - Projects that are do (school plans) - Graduation Plans (speech, to-do-list, etc.) - Dates for ...
December 5, 2011 by Laruen

8th Grade Earth Science Help?
Which of the following terms refers to the time it takes for one-half of the radioactive atoms in a sample of a radioactive element to decay? - relative age - absolute age - potassium-argon data - half-life** Is my answer correct?
January 14, 2014 by Rainshine

i am in 7th grade accelerated science, so i am learing 8th grade material. I am having some difficulties with covelant and ionic bonds. My lab is due tomorrow and i have a quiz on Wed. If anyone can help me understand this better i would be greatful. Thank-you.
January 4, 2010 by Michele

8th grade
how do atoms in covalent bonds become slightly negative or slightly positive?
January 6, 2009 by Anonymous

Physical Science
Hi... well anyways so I am in 7th grade but I'm taking 8th grade science...I think...I know for sure that I am in Accelerated 7th grade science so if that helps at all, there you go:) Back to the subject I'm really confused with acceleration calculation and velocity, time, ...
May 2, 2011 by Pate

How many atoms of aluminum can be produced by the decomposition of 47.1 g of Al2O3? (Hint: Write and balance the equation first.) The products are oxygen gas and aluminum metal (Al) A) 1.11 X 10^24 Al atoms B) None of these C) 1.39 X 10^23 Al atoms D) 5.56 X 10^23 Al atoms E) ...
November 10, 2010 by Tim

8th grade chemistry
2CuSO4 what does the information above represent? (A) two molecules made of one copper atom, one sulfur atom, and four oxygen atoms. (B) two elements made of one copper atom, one sulfur atom, and four oxygen atoms. (C) two copper atoms, one sulfur atom, and four oxygen atoms...
April 21, 2010 by monica

what are the formulas for speed, distance, and acceleration for 8th grade science
October 21, 2008 by vahnna

Science 8R - help!
I need a definition for Lines of force (8th grade science regents level, ny)
December 17, 2012 by Laruen

what can i compare middle school to?
what can i compare middle school to? (use in metaphor), based on 6th, 7th, and 8th grade. for example playing monopoly 6th grade - buying properties, 7th grade- adjusting to the game, 8th grade - stress over money
May 16, 2010 by NEEDSHELP(:

8th grade
what is science
September 28, 2010 by mary

How do I calculate between the race of two automobiles in kilometer speed this is a 8th grade science question
April 22, 2013 by Alexsi

8th grade
im in advanced math so i do 8th grade math and i don't understand how too gragh the fractions in equations like y=2/3x+1
November 29, 2009 by jazmine

8th grade science
What is radiation?
March 18, 2010 by Erik

- Computers - English - Foreign Languages - Health - Home Economics - Math - Music - Physical Education - Science - Social Studies GRADE LEVELS - Preschool - Kindergarten - Elementary School - 1st Grade - 2nd Grade - 3rd Grade - 4th Grade - 5th Grade - 6th Grade - 7th Grade - ...
January 8, 2010 by peter

What is a good science project to do? I am in 8th grade and am studying earth science. I need to present the project in front of class. Im really nervouse.
January 27, 2008 by Katy

science (8th grade)
Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content.
September 13, 2006 by tonya

8th grade Math
I'm actually in 7th grade, but I'm doing 8th grade pre-algebra, but anyway, here: I'm supposed to simplify these four problems and I don't really understand how: 28s (15 power) ____ 42s (12 power) 4m+(n[7th power]m) 63m(5 power)n(6 power) ______________________ 27mn 3a·4a(4 ...
September 9, 2010 by Mika

8th grade science
what is an example of suspension
August 20, 2008 by marcus

8th grade science
How do you do a ball dichotomy?
August 23, 2009 by Madison

8th grade
how do I balance equasions in science?
November 22, 2009 by thomas

8th grade science
What is the reprodution in bacteria, prokaryotic cells, called? A. Mitosis, B. Binary fission, C. Interphase, or D. Fusion. Thank you for helping! I need this because it's for my 9 weeks exam study guide which counts for a whole lot of my grade. Thanks!
May 24, 2011 by Ashley

8th grade science
how does a dandelion and a deer alike?
January 29, 2009 by CKLAIR

8th grade science
February 1, 2009 by CARL JOHNSON

8th grade science
How did the broad river get its name?
September 17, 2009 by brittany

8th grade science
an information on crop production
August 31, 2010 by haniya

8th grade Science
What does Air Mass Consist of?
October 21, 2010 by Ashley

8th grade Science
In ionic bonds, what is the answer to these? Li + P and Rb + As and Pb + F and Bc + N ??
January 19, 2011 by Susan

8th grade science
Why is water essential to life?
February 17, 2011 by Kallie

8th grade science
what does Radium bond with and what are the reactions
December 3, 2011 by Anonymous

8th grade science
Hi! For a research project from my science class I'm having trouble trying to find an answer to the following problem. How does the Man-o-War care for their young? Thanks!
January 5, 2011 by Lina

8th grade science
how does wave frequency affect the light?
January 21, 2009 by Ashley

8th Grade Science
At what temperature is water the most dense?
April 1, 2009 by Mark

8th grade Science
What are the 3 problems solved by fluid technology???
May 6, 2009 by =)

8th grade science
why are neuclar waste products a problem?
October 11, 2010 by jess

8th grade earth science
how to find the longitude of meridians
October 20, 2010 by alex

8th grade
How do you calculate displacement and distance and velocity? (science)
November 8, 2010 by Caleb

8th grade science
What experiments or activities are unacceptable to do with seeds
November 15, 2010 by Daniel

8th grade science
What is the difference between speed and velocity?
February 28, 2011 by Kallie

8th grade science
Is it probable that the sun will become a supernova? Why or why not?
April 29, 2011 by Kallie

8th grade science :(
How does the sun's gravity influence tides?
November 23, 2013 by helena

8th Grade
Whta is a verctorican (srry i can't spell that) award when the 8th graders get one?????
November 19, 2011 by Laruen

8th grade science
what is the difference between sexual and asexual reproduction
November 3, 2008 by Dondre

8th Grade Science
If we say that gold has a density of 19.32 g/ml, at what temperature is this substance?
April 1, 2009 by Mark

Science 8th grade
What is the mass of a piece of aluminum that has a volume 100.0^3?
October 26, 2009 by Nicholas

8th grade science
what contents in magma affects a volcanos explosive?
March 28, 2011 by jess

8th grade science
What is the symbiotic relationship between scallops and sponges?
February 8, 2011 by Alicia Cunn

8th grade science
What leaves after a disturbance in the climax community?
February 18, 2011 by Nina

science 8th grade
what will happen if a metal block that is 60°c is placed in water that is 20°c?
April 24, 2011 by Antoinette-Hope

science 8th grade
how many periods are there in the main body of the periodic table?
September 27, 2011 by sammie doodles :-)

8th Grade Science
Label these reactants and products: 3Fe + 2 O2> Fe3O4
December 11, 2012 by William

H2SO4. It's asking for the number of atoms and the total atoms. Do I just put 7 atoms for both questions?
January 7, 2015 by M

H2SO4. It's asking for the number of atoms and the total atoms. Do I just put 7 atoms for both questions?
January 7, 2015 by M

How do speakers work I am in 8th grade and have to write a 5 pargaph essay
February 25, 2008 by katie

Science-8th Grade
In metric, we use_______to measure volume. is the answer mass ??
September 29, 2008 by Joy

8th grade science
what functions does a nuclear membrane, chromatin, and nucleolus have
March 14, 2010 by gerry

8th grade, science
What recources would be required for establishing a colony in space.
October 15, 2010 by unknown

8th grade science
When forces are ______ they are equal and opposite and their is ________ ___________.
November 21, 2010 by lexus

8th grade science
when you bring your bicycle to a stop where does he kinetic energy it had go?
January 4, 2011 by jess

8th grade Physical Science
What is the potential energy of a 3 kilogram ball this is on the ground?
January 19, 2012 by Misty

Science 8th grade
what gets hot and cold faster, solid or gas and why?
March 22, 2013 by Anon

8th grade Science please help
Why is soda in an unopened bottle a homogenous mixture?
February 1, 2015 by tommy

Chem 101. Science
Rank the following samples in mass from least to greatest. a) 2 x 1023 S atoms b) 0.25 mol of Cu atoms c) 2 mol of N atoms d) 6 x 1023 Na atoms
August 26, 2010 by Samuel

8th Grade Science
Here is another one: "The interval between two events is the ______________."
September 27, 2007 by Amanda

8th grade science
Explain if it is possible to have a dilute solution of a strong acid? Thanks.
March 26, 2009 by al

8th grade science
how do ear defenders work with the big idea energy transfer
June 6, 2010 by sam

8th grade science
compare and contrast the effect of a catalyst on a chemical reaction with that of an inhibitor?
December 21, 2010 by jess

8th grade science
Is predator-prey the most important ecological relationship? Thanks everyone!
February 7, 2011 by Erica

8th grade science
why does the high specific heat of water make it essential to life?
February 15, 2011 by Kallie

Science (8th grade)
What are some living relatives of cyrtolite retrosus? (a kind of gastropod)
October 25, 2011 by Samantha

8th grade science
the question is: "The absolute magnitude of a star is -12.. How would you describe its brightness?"
April 20, 2013 by Ke

8th grade science
How does altitude affect the freezing, melting and boiling points of water?
September 29, 2013 by A

8th grade science
Explain how the sun's temperature will change over time as it ages.
February 15, 2014 by octavia

8th grade science
How many (total) of each atom are there in the reactants and the products of cellular respiration? PLEASE HELP ME
February 23, 2014 by Shawn

Has anyone took the Structures and Properties test for 8th grade. I'm a student at connections and I need help.
January 13, 2017 by Anonymous

Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...
March 16, 2015 by Ann

Science 8th grade
A cell digests proteins through a ___________ process? Where I can I get some information on this thanks
March 22, 2008 by Alley

8th grade Science
The density of salt(sodium chloride) is 2.16g/mL. What is the volume of 216g of this solid?
September 18, 2008 by BC

8th grade science
why is diffusion important to living things? (organisms) u get full credit no worries! =]
November 2, 2008 by amir

8th grade science
Describe the motion of a bicycle in a race in terms speed,velocity,acceleration.
November 7, 2010 by cassie

Im 13 in the 8th grade and i need help on figurinmg out simularites between mitosis and meosis please help thanks :]
October 31, 2011 by lala

Science 8th Grade
In what ways can outside forces affect an object's motion, position, and shape?
May 15, 2015 by Archy

Find the amount Atoms and the total amount of elements for each formula C4H10 2 elements 14 atoms H4Mg3Si2O9 4 elements 18 atoms C6H7O2(OH)3 3 elements 18 atoms Pb(NO3)2 3 elements 9 atoms
January 6, 2015 by M

Ms.Sue (ONLY)
can you plz help me in science? PLZ HELP ME! YOU HELP ALL THE TIME! *begs* plz help! i am my knees!!!!! (really i am!) its called "science 8th grade"
March 7, 2012 by sammie doodles :-)

8th grade math
I am in 8th grade math as a sixth grader. I am stuck on one problem. It is this: You are making a necklace that is 9 inches long. You use 6 beads for each inch. what integer is the change in your supply of beads after making the necklace?
August 31, 2015 by Casey

Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!
December 12, 2010 by Alyssa

Science (atoms) 8th grade
Speeds up or slows down? By stirring a gas in a liquid, its solubility ____________ the dissolving process. High or low? A gas's solubility is is faster in a liqud when under __________. How do the methods of speeding the rate of solution for dissolving a solid in a liquid ...
March 10, 2009 by Twilight lover

Physical Science 8th grade
How does metallic bonding contribute to Luster, Heat conductivity, Ductability, and malleability?
January 22, 2013 by Victoria

8th grade science
what is something that compares a measurement to the real or accepted value, and it has these letters in its name: acgcauc
November 11, 2008 by sam

8th grade science
infer why deposits form in the steam vents of irons in some parts of the country. thank you.
March 26, 2009 by al

science, 7th,6th,8th,9th grade
In what three ways can machines make work easier?
April 15, 2010 by Nyla Rose

8th grade
i have a project in science and i can't seemed to find the explanation of an element's, silver, symbol. Thanks so much!!!!!!!!!!!!!!
November 7, 2010 by Taavon 9

8th grade science
Good hypothesis for does the human tongue have definite areas for certain tastes
February 3, 2013 by Marc

8th Grade Physical Science
Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.
October 1, 2013 by kirt

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