Physical Science mid _term by https://padlet.com/liu_peng/vrgwi19ari3u 伴随着一点小恶作剧 en-us 2017-04-21 02:24:27 UTC 2017-04-28 00:10:37 UTC hello@padlet.com Kevin 2824551757 https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406945 9.
Mass per unit volume
For example, the 5 kg/ m^3
Density means the per cubic meter is 5 KG]]> 2017-04-21 02:27:09 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406945 ADAM 1814685113 https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406960 each row in the table of elements. The number of electrons per period varies because the number of available track increases from energy level to energy level.

An classify of elements in columns, based on a set of properties that repeat from row to row
]]> 2017-04-21 02:27:21 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406960 George https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406962 #11
Dalton:He think atom like a ball 
Thomson:He thinks atom is                        chololate chip 
Rutherford：He think the elecons are all around out side.

]]> 2017-04-21 02:27:22 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406962 HELEN. 1844913127 https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406992 #3
conductor of heat：The ability of heat to move easily.]]> 2017-04-21 02:27:38 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167406992 Dennis https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407007 2017-04-21 02:27:47 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407007 Kira 1584762795 https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407020 ＃2
Flammability： Something easy to burning.
]]> 2017-04-21 02:27:56 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407020 Sofia 2002n0419 https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407036 ＃5
melting point: Solid turn its physical state by solid state for the temperature of the liquid]]> 2017-04-21 02:28:10 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407036 Matthews ke_youze https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407049 proton: a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
Neutron: an elementary particle having no charge, mass slightly greater than that of a proton.
Electron: an elementary particle that is a fundamental constituent of matter]]> 2017-04-21 02:28:18 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407049 Doris https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407170 Question 4 
plastic 
There is a strong toughness ，great malleability]]> 2017-04-21 02:29:43 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407170 Angela xia_yiwen https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407317
#6
---Pure Substance: composed of a single material substances called pure, pure includes elemental and compound .
--- Element : Element refers to the type of atoms with the same nuclear charge number. 
---Atom: Atom refers to the chemical reaction is divided into basic particle.
---Compound: Consists of two or more elements of pure.    

]]> 2017-04-21 02:31:17 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407317 Dan https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407466 #14
Group: An up and down column in the Periodic Table of Elements. These elements have similar properties like hardness, malleablility, etc.
Row: Elements in the Periodic Table of Elements that go from left to right. Elements in different rows have different numbers of valence electrons. The element on the right side has 8 valence electrons and is very stable (wont react). Metals are on the left side and non-metals on the right.]]> 2017-04-21 02:32:53 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407466 Mike liu_peng https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407808 The Periodic Table of elements:It have many elements in this chart         ]]> 2017-04-21 02:38:02 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167407808 Dennis https://padlet.com/liu_peng/vrgwi19ari3u/wish/167408267 #8
Viscosity :
a.the property of a fluid that resists the force tending to cause the fluid to flow.
b.the measure of the extent to which a fluid possesses this property]]> 2017-04-21 02:43:19 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167408267 JACK peng_bo https://padlet.com/liu_peng/vrgwi19ari3u/wish/167409608 In chemistry and physics, an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction]]> 2017-04-21 02:59:06 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/167409608 Dan stella_sun https://padlet.com/liu_peng/vrgwi19ari3u/wish/168036273 #15
The Atomic number is the number of protons in the atom. This is the number used in the Periodic Table of elements to put the elements in order.

#16
Metals: found on the left and center of the periodic table of elements. These elements are let heat/electricity move easily, sound bright, are shiny, and can bend easily.
Non-metals: these are found on the right side. They are the opposite of metals.
Metalloids: these are the elements in-between metals and non-metals. They can be like metals or non-metals. Sometimes they change with temperature.
Alkali metals: these are the metals on the left side. they are the most reactive.
Alkali earth metals. these are group two and make salt
Halogens: these are on the right side and are non-metals. They can also make salt and are reactive.
Noble gases: these are group 8 non-metals and very stable. All are gas at room temperature

]]> 2017-04-25 08:41:39 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168036273 Essay # stella_sun https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300034 2017-04-26 07:41:52 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300034 Essay #____ stella_sun https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300037 Write your answer]]> 2017-04-26 07:41:55 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300037 George 10.Using the kinetic theory, explain what causes gas pressure. https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300161 There is a high pressure and a depression then ,the atmospheric pressure imbalance ,and then the air outside want to get to the high pressure ,and then they become energy and push inside that energy is gas pressure. ]]> 2017-04-26 07:42:41 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300161 Essay#8 2824551757 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300303 For example, ]]> 2017-04-26 07:43:35 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300303 Essay# https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300365 Isotopes are atoms of the same proton, such as H, D, T, they are isotopes, all have a proton, in fact, they are atoms, ions are charged particles, atoms are not charged]]> 2017-04-26 07:44:00 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300365 NO.6[ADAM] 1814685113 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300422 endothermic is get the hot energy in,exothermic is make the hot energy goes out.]]> 2017-04-26 07:44:25 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300422 Essay No.1 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300655 when covalent  bond occur, they share valence electrons ,but the       ionic bond occur one atom takes another's  valence electrons fully.

]]> 2017-04-26 07:45:50 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300655 essay,1. Covalent Bond： sharing of election. xia_yiwen https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300798 2.  Lonic  Bond :transfer of election.

Angela

]]> 2017-04-26 07:46:35 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300798 Helen 1844913127 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300979 #4 --midterm#
1:In general metal are glossy  most of the metal is silver; Non-metallic are not glossy. And color is also varied.
2:Most metals is malleable, and they can heat and conduction;And non-metallic are not ductility, they can't heat and cannot conduct electricity.
3:Generally, the density of the metal is bigger, high melting point; And non-metallic's density is small, low melting point.
Examples:
metal:Iron scoop
non-Metal：paper]]> 2017-04-26 07:47:21 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168300979 Matthew ke_youze https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301212 #9 ]]> 2017-04-26 07:48:34 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301212 oris https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301431
group: two or more atoms bound together as a single unit and forming part of a molecule.
protons: A proton is an atomic particle that has a positive electrical charge.
atomic number:the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element.
metals:any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
In this paper,the research progress on CS-AAS at home and abroad in recent years,and the application of CS-AAS in determination of nonmetals(sulfur and halogens) and solid sample injection were reviewed.]]> 2017-04-26 07:49:52 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301431 Essay #2 2002n0419 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301730
Photon is inside the atomic ,firework though endothermic  reaction, rising from ground state to the excited state,also the energy achieve the energy level,and then it can make entertaining light.

]]> 2017-04-26 07:51:29 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168301730 Mike 11 liu_peng https://padlet.com/liu_peng/vrgwi19ari3u/wish/168302097 Food 
1,density:]]> 2017-04-26 07:53:40 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168302097 Question 5 1584762795 https://padlet.com/liu_peng/vrgwi19ari3u/wish/168302277 if the scientist used something positive instead of negative]]> 2017-04-26 07:54:45 UTC https://padlet.com/liu_peng/vrgwi19ari3u/wish/168302277