Chemistry Unit Review Board by EML https://padlet.com/p0185084/ChemReviewNov2 Create 3 multiple choice questions - include answer at the end of the post Create 2 short answer questions - include answer at the end of htepost en-us 2018-10-29 13:10:26 UTC 2018-11-02 02:49:20 UTC hello@padlet.com Multiple Choice Question #1 675905 https://padlet.com/p0185084/ChemReviewNov2/wish/298065239 How many electrons can you have on the 3rd shell?

a) 8
b) 18
c) 2

Answer = a]]> 2018-10-29 15:04:44 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298065239 Multiple Choice Question #2 675905 https://padlet.com/p0185084/ChemReviewNov2/wish/298071484 What's a heterogeneous mixture?

a) You can only see one new mixture

b) You can see both separate products in the mixture

c) It's a fancy way of saying compound 

Answer = b]]> 2018-10-29 15:14:45 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298071484 Multiple Choice Question #3 675905 https://padlet.com/p0185084/ChemReviewNov2/wish/298074455 What ones are part of the alkali metals group.

a) Caesium

b) Radium

c) Mercury

Answer = a]]> 2018-10-29 15:19:53 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298074455 Short answer question #1 675905 https://padlet.com/p0185084/ChemReviewNov2/wish/298077746 How do you find the amount of neutrons an element has?

Answer = You subtract the amount of protons the element has, from the atomic mass of the element.]]> 2018-10-29 15:24:34 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298077746 Short answer question #2 675905 https://padlet.com/p0185084/ChemReviewNov2/wish/298080267 What happens to particles when heat is added to them.

Answer = The particles start to vibrate/move quicker, and the space between particles grow larger.]]> 2018-10-29 15:28:04 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298080267 What is the formula for density? https://padlet.com/p0185084/ChemReviewNov2/wish/298485908 A) v/m
B) m/v
C) vxm
Answer: b]]> 2018-10-30 13:29:43 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298485908 What is the homogeneous mixture https://padlet.com/p0185084/ChemReviewNov2/wish/298486621 A) a salad
B) a cookie
C) coffee

Answer: coffee]]> 2018-10-30 13:30:47 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298486621 What is the chemical change? https://padlet.com/p0185084/ChemReviewNov2/wish/298487185 A) marshmellow burning
B) ice melting
C) chopping onions
Answer: a]]> 2018-10-30 13:31:38 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298487185 Multiple choice #1 https://padlet.com/p0185084/ChemReviewNov2/wish/298487577 What element corresponds with the symbol Na 

a) Nitrogen

b) magnesium

c) sodium 

Answer: c]]> 2018-10-30 13:32:12 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298487577 What is an ion https://padlet.com/p0185084/ChemReviewNov2/wish/298487778 An atom that gains or loses electrons and therefore has a charge.]]> 2018-10-30 13:32:32 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298487778 Whats the difference between a anion and cation https://padlet.com/p0185084/ChemReviewNov2/wish/298487908 A) a anion is negatively charged and cation is postiviely charged 
B) a cation is negatively charged and a anion is positively charged
C) there is no difference 

Answer is A]]> 2018-10-30 13:32:46 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298487908 What is a cation? https://padlet.com/p0185084/ChemReviewNov2/wish/298488191 An atom that loses electrons and therefore has a positive charge]]> 2018-10-30 13:33:13 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298488191 What is an cation https://padlet.com/p0185084/ChemReviewNov2/wish/298489099 A) a positively charged ion
B) a negativity chaged ion
C) a neutral ion

Answer: A]]> 2018-10-30 13:34:37 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298489099 What is a chemical change https://padlet.com/p0185084/ChemReviewNov2/wish/298490525 A) change in state
B) change in size
C) change in smell

Answer: C
]]> 2018-10-30 13:36:51 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298490525 Multiple choice #2 https://padlet.com/p0185084/ChemReviewNov2/wish/298490597 Which Element is a noble gas
a) oxygen 

b) Lithium

c) Argon

Answer: argon]]> 2018-10-30 13:36:56 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298490597 How many valence electrons are in the noble gas family 664407 https://padlet.com/p0185084/ChemReviewNov2/wish/298491340 A) 1
B) 5
C) 8 

Answer: C]]> 2018-10-30 13:38:08 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298491340 what is the symbol of calcium? https://padlet.com/p0185084/ChemReviewNov2/wish/298492201 A)Cs
B)Co
C)Ca
D)Ce
answer:Ca]]> 2018-10-30 13:39:27 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298492201 What does a bohr Rutherford diagram represent https://padlet.com/p0185084/ChemReviewNov2/wish/298493066 A) mass
B) amout of electrons
C) state of an object

answer: B]]> 2018-10-30 13:40:42 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298493066 What is the chemical symbol for platinum 6924811 https://padlet.com/p0185084/ChemReviewNov2/wish/298494102 A)pt
B)pl
C)K]]> 2018-10-30 13:42:25 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298494102 Which of the three states of matter have the fastest moving particles. 664407 https://padlet.com/p0185084/ChemReviewNov2/wish/298494291 A) Solid
B) Liquid
C) Gas

Answer: C]]> 2018-10-30 13:42:42 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298494291 What is the family name of the 17th group on the periodic table? 695605 https://padlet.com/p0185084/ChemReviewNov2/wish/298495361
a) Boron Family 
b) Alkai Earth Family 
c) Halogen Family 

Answer: c) Halogen Family]]> 2018-10-30 13:44:21 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298495361 Multiple choice #3 https://padlet.com/p0185084/ChemReviewNov2/wish/298495399 What's the name given to the row of electrons farthest away from the nucleus 

a) proton 

b) Valence electron

c) outer ring 

Answer: Valence electron]]> 2018-10-30 13:44:25 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298495399 Three things particle theory states: 661679 https://padlet.com/p0185084/ChemReviewNov2/wish/298495682 Particles are always moving
A particle changes speed based on state
All particles are very tiny]]> 2018-10-30 13:44:52 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298495682 How many protons are in gold 6924811 https://padlet.com/p0185084/ChemReviewNov2/wish/298496409 A)69
B)57
C)83
D)79]]> 2018-10-30 13:46:00 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298496409 How many electrons can fit on the first shell? 664407 https://padlet.com/p0185084/ChemReviewNov2/wish/298496792 A) 8
B) 2
C) 18

Answer: B]]> 2018-10-30 13:46:38 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298496792 Do protons have a negative or positive charge? 695605 https://padlet.com/p0185084/ChemReviewNov2/wish/298497949 a) Negative 
b) Positive 

Answer: b) Positive]]> 2018-10-30 13:48:19 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298497949 Multiple Choice Question #1 904508 https://padlet.com/p0185084/ChemReviewNov2/wish/298498053 What's the formula for density 
a) m/v
b) m×v
c) v/m
Answer= m/v]]> 2018-10-30 13:48:28 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298498053 The number of electrons is equal to what? https://padlet.com/p0185084/ChemReviewNov2/wish/298498130 A) the number of protons
B) the atomic mass 
C) the number of neutrons 

Answer is a)]]> 2018-10-30 13:48:35 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298498130 Which of the following is hetergeneous? 695605 https://padlet.com/p0185084/ChemReviewNov2/wish/298498734 a) Air 
b) Hot chocolate with marshmallows 
c) Apple juice 

Answer: b) Hot chocolate with marshmallows]]> 2018-10-30 13:49:32 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298498734 Cations are located on.. https://padlet.com/p0185084/ChemReviewNov2/wish/298499852 A) the left side of the table of elements
B) the right side of the table of elements 
C) the middle of the table of elements 

Answer is a)]]> 2018-10-30 13:51:18 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298499852 How many neutrons are in potassium 661679 https://padlet.com/p0185084/ChemReviewNov2/wish/298499862 G: protons; 19. Mass; 39
R: neutrons
A: mass - (P+) = neutrons
S: 39 - 19= 20
S: there are 20 neutrons in postassium

]]> 2018-10-30 13:51:19 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298499862 Name three properties of molecular compounds. 695605 https://padlet.com/p0185084/ChemReviewNov2/wish/298500480 a) Made up of non-metal elements, low melting and boiling points, good conductors of heat and electricity. 
b) Soft, not soluable in water, poor conductors of heat and elextricity. 
c) Need to contain at least one metal, strong attraction, high boiling points. 

Answer: b) Soft, not soluable in water, poor conductors of heat and electricity.]]> 2018-10-30 13:52:20 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298500480 The molecular compound MgCl2 is equal to what? https://padlet.com/p0185084/ChemReviewNov2/wish/298501197 A) 1 atom of Magnesium and 3 atoms of Chlorine
B) 2 atoms of Magnesium and 2 atoms of Chlorine
C) 1 atom of Magnesium and 2 atoms of Chlorine

Answer is c)]]> 2018-10-30 13:53:29 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298501197 what is the symbol of ununbium? https://padlet.com/p0185084/ChemReviewNov2/wish/298502044 A)Uuq
B)Uub
C)Uae
D)Uer
answer:B]]> 2018-10-30 13:54:55 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298502044 Whats the symbol for Phosphorus 904508 https://padlet.com/p0185084/ChemReviewNov2/wish/298503659 a) Ph
b) Po
c) P
Answer= P]]> 2018-10-30 13:57:41 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298503659 Short answer question 1 https://padlet.com/p0185084/ChemReviewNov2/wish/298503759 What are two types of ions?
Answer: Cations and Anions.

]]> 2018-10-30 13:57:51 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298503759 when it was discovered helium? https://padlet.com/p0185084/ChemReviewNov2/wish/298504255 A)1999
B)2014
C)1868
D)1870
Answer:C 186]]> 2018-10-30 13:58:42 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298504255 Short answer question 2 https://padlet.com/p0185084/ChemReviewNov2/wish/298505065 What do Heterogenous and Homogenous mixtures contain?
Answer: they contain 2 or more pure substances.]]> 2018-10-30 13:59:44 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298505065 What is Particle Theory? 695605 https://padlet.com/p0185084/ChemReviewNov2/wish/298505538 a) All matter is made of very small atoms, all particles in a pure substance are the same, particles are always moving, particles in a substance are attracted to each other. 
b) All matter is made up of very small atoms, particles in substances are always different, particles sometimes stop moving to become solids, matter is only in some things. 

Answer: a) All matter is made of very small atoms, all particles in a pure substance are the same, particles are always moving, particles in a substance are attracted to each other. ]]> 2018-10-30 14:00:28 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298505538 Multiple Choice Question #3 904508 https://padlet.com/p0185084/ChemReviewNov2/wish/298505702 How many neutrons are in magnesium
a) 12
b) 24
c) 6
e) 26
Answer= 12]]> 2018-10-30 14:00:44 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298505702 Short Answer Question #1 904508 https://padlet.com/p0185084/ChemReviewNov2/wish/298508571 Whats the difference between an element amd a compound? 
Answer: An element is composed of identical atoms and a compound is composed of 2 or more different kinds of elements.]]> 2018-10-30 14:04:30 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298508571 What is the difference between the particles in solids, liquids and gases? 664407 https://padlet.com/p0185084/ChemReviewNov2/wish/298509282
Answer: In a solid the particles are attracted to each other and can just vibrate in place, liquid particles have a smaller attraction and can slide past each other, gas particles are the most spread apart and move very quickly. ]]> 2018-10-30 14:05:28 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298509282 What is the difference between a homogeneous and a heterogeneous mixture? 664407 https://padlet.com/p0185084/ChemReviewNov2/wish/298511234 A homogeneous mixture is when two or more substances mix and it remains the same uniform appearance, for example kool aid is made up of many things but remains the same. A heterogeneous mixture is the non-uniform mixture, for example cereal and milk, when there mixed you can two substances separately. ]]> 2018-10-30 14:08:26 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298511234 Short Answer Question #2 904508 https://padlet.com/p0185084/ChemReviewNov2/wish/298513680 How do you find the number of protons, neutrons and electrons?
Answer= The number of protons is the same as the atomic number and the number of electrons is the same as the number of protons. To findthe number of neutrons you have to subtract the atomic number from the atomic mass]]> 2018-10-30 14:11:36 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/298513680 How many protons are in the nucleus of sulphur? 655324 https://padlet.com/p0185084/ChemReviewNov2/wish/299654334 a) 8
b) 16
C) 32

Answer: 16]]> 2018-11-02 02:33:53 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/299654334 What is the best conductor of metal? 655324 https://padlet.com/p0185084/ChemReviewNov2/wish/299654522 a) Copper
b) Aluminum
c) Zinc

Answer: Copper]]> 2018-11-02 02:35:26 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/299654522 Where is sulphur usually found? 655324 https://padlet.com/p0185084/ChemReviewNov2/wish/299654780 a) near beaches
b) near deserts
c) near volcanoes

Answer: near volcanoes]]> 2018-11-02 02:37:05 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/299654780 Short Answer #1 655324 https://padlet.com/p0185084/ChemReviewNov2/wish/299655635 Why are some element a more reactive than others?
Answer: the more outer orbits an element has the more reactive it is. ]]> 2018-11-02 02:42:44 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/299655635 Short Answer #2 655324 https://padlet.com/p0185084/ChemReviewNov2/wish/299655853 What are the 3 subatomic particles of an atom?

Answer: the three subatomic particles are;
Protons 
Neutrons
Electrons]]> 2018-11-02 02:43:57 UTC https://padlet.com/p0185084/ChemReviewNov2/wish/299655853