Atomic Structure Unit Test
Question
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point)
The model should show 59 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 27 protons and 32 neutrons.
The model should show 32 protons and 59 neutrons.
Atomic Structure Unit Test (20 questions)
1. the electron has a negative charge and is found outside of the nucleus
2. The model should show 27
protons and 32 neutrons
3. because only two electrons can fit in the first orbit around the nucleus and each period on the table is organized by number of orbits
4. the atoms in lithium sulfide are held together by bonds
5. chlorine
6. atomic number
7. low energy alpha particles passing through a field of high mass number particles
8. metals can be hammered into thin sheets and nonmetals are brittle
9.vanadium
10.silicon
11.hydrogen does not have any neutrons
12.francium has fewer valence electrons but they are in higher energy level
13.an ionic bond is likely because they will want to give away two valence electrons in order to become stable
14. 2-
15.four
16. OH
17. methyl
18 , 19 & 20 do on your own
( coming from somebody who got a 66 first time then 100 second time )
YOURE WELCOME
umm- mine has 13?
LILBABY IS ONE HUNDRED PERCENTTT
atomic number = number of protons = 27
27 + number of neutrons = 59
so
number of neutrons = 32
(C)
i only have 9 questions in mine
1. as thermal energy increases, there is more particle movement.
2. Benedict's test
3. the presence of starch
4. weight.
5. yes, it would hurt because the bricks would have the same mass.
6. the density will remain the same because mass and volume will both increase in the same way.
7. from a liquid to a gas, and black to a liquid
8. anything made in the lab requires natural resources to produce it.
9. it is a synthetic material that comes from natural resources.
10. a place where plastic and other waste has collected in the pacific ocean.
11. the atoms in lithium sulfide are held together by bonds.
12. if you type the same thing i did they will no u cheated
trust me you will get a 100%
Matter and Atomic Structure unit test
Answers pleasee I need help ASAPPP!!
Mine has (14 questions)