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?
How does the behavior of atoms and molecules differ between solids liquids and gasses?
What is the usual state of matter for covalent compounds? Ionic compounds? What is the smallest particle for each?
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.
which of the following molecules does not contain 5 atoms? A. CaCO3 B. Mg(OH)2 C. NaHCO3 D. Fe2O3
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
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 ...
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?
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.
how do atoms in covalent bonds become slightly negative or slightly positive?
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, ...
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) ...
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...
what are the formulas for speed, distance, and acceleration for 8th grade science
I need a definition for Lines of force (8th grade science regents level, ny)
How do calculate specific heat and thermal energy?Science is hard in the 8th grade .
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
what is science
How do I calculate between the race of two automobiles in kilometer speed this is a 8th grade science question
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
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What is radiation?
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.
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. http://en.wikipedia.org/wiki/Crystal
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 ...
what is an example of suspension
How do you do a ball dichotomy?
how do I balance equasions in 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!
how does a dandelion and a deer alike?
WHAT IS THE CHEMICAL STRUCTURE FOR STARCH
How did the broad river get its name?
an information on crop production
What does Air Mass Consist of?
In ionic bonds, what is the answer to these? Li + P and Rb + As and Pb + F and Bc + N ??
Why is water essential to life?
what does Radium bond with and what are the reactions
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!
how does wave frequency affect the light?
At what temperature is water the most dense?
What are the 3 problems solved by fluid technology???
why are neuclar waste products a problem?
how to find the longitude of meridians
How do you calculate displacement and distance and velocity? (science)
What experiments or activities are unacceptable to do with seeds
What is the difference between speed and velocity?
Is it probable that the sun will become a supernova? Why or why not?
How does the sun's gravity influence tides?
Whta is a verctorican (srry i can't spell that) award when the 8th graders get one?????
what is the difference between sexual and asexual reproduction
If we say that gold has a density of 19.32 g/ml, at what temperature is this substance?
What is the mass of a piece of aluminum that has a volume 100.0^3?
what contents in magma affects a volcanos explosive?
What is the symbiotic relationship between scallops and sponges?
What leaves after a disturbance in the climax community?
what will happen if a metal block that is 60°c is placed in water that is 20°c?
how many periods are there in the main body of the periodic table?
Label these reactants and products: 3Fe + 2 O2> Fe3O4
H2SO4. It's asking for the number of atoms and the total atoms. Do I just put 7 atoms for both questions?
H2SO4. It's asking for the number of atoms and the total atoms. Do I just put 7 atoms for both questions?
How do speakers work I am in 8th grade and have to write a 5 pargaph essay
In metric, we use_______to measure volume. is the answer mass ??
what functions does a nuclear membrane, chromatin, and nucleolus have
What recources would be required for establishing a colony in space.
When forces are ______ they are equal and opposite and their is ________ ___________.
when you bring your bicycle to a stop where does he kinetic energy it had go?
What is the potential energy of a 3 kilogram ball this is on the ground?
what gets hot and cold faster, solid or gas and why?
Why is soda in an unopened bottle a homogenous mixture?
Here is another one: "The interval between two events is the ______________."
Explain if it is possible to have a dilute solution of a strong acid? Thanks.
how do ear defenders work with the big idea energy transfer
compare and contrast the effect of a catalyst on a chemical reaction with that of an inhibitor?
Is predator-prey the most important ecological relationship? Thanks everyone!
why does the high specific heat of water make it essential to life?
What are some living relatives of cyrtolite retrosus? (a kind of gastropod)
the question is: "The absolute magnitude of a star is -12.. How would you describe its brightness?"
How does altitude affect the freezing, melting and boiling points of water?
Explain how the sun's temperature will change over time as it ages.
How many (total) of each atom are there in the reactants and the products of cellular respiration? PLEASE HELP ME
Has anyone took the Structures and Properties test for 8th grade. I'm a student at connections and I need help.
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
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...
A cell digests proteins through a ___________ process? Where I can I get some information on this thanks
The density of salt(sodium chloride) is 2.16g/mL. What is the volume of 216g of this solid?
why is diffusion important to living things? (organisms) u get full credit no worries! =]
Describe the motion of a bicycle in a race in terms speed,velocity,acceleration.
Im 13 in the 8th grade and i need help on figurinmg out simularites between mitosis and meosis please help thanks :]
In what ways can outside forces affect an object's motion, position, and shape?
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
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"
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?
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!!!!!!!!!!!!!!!
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 ...
How does metallic bonding contribute to Luster, Heat conductivity, Ductability, and malleability?
what is something that compares a measurement to the real or accepted value, and it has these letters in its name: acgcauc
infer why deposits form in the steam vents of irons in some parts of the country. thank you.
In what three ways can machines make work easier?
i have a project in science and i can't seemed to find the explanation of an element's, silver, symbol. Thanks so much!!!!!!!!!!!!!!
Good hypothesis for does the human tongue have definite areas for certain tastes