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chemistry review Flashcards | StudBud
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chemistry review
chemistry review
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Questions
18
Answers
1
What group number is S, sulfur?
6
3
32
16
2
What is mass of Nickel?
28
30
59
58.6934
3
What is the atomic number of Nickel?
30
59
58.6934
28
4
Which of the following is an indication a chemical reaction occurred?
the temperature of water decreases when freezing
a gas (bubbles) are produced when mixing baking soda and vinegar
water turns red when food coloring is added
5
The mass of the atom is in the nucleus
False
True
6
How many protons does Nickel have?
31
59
28
58.6934
7
where are metals on the periodic table?
only the bottom two rows
to the left of the stair step/zig zag line
to the right of the stair step/zig zag lint
group 17
8
An example of a chemical change is....
melting a brick of gold
burning sugar cubes and releasing water vapor
cutting paper into triangles
mixing tea and sugar to make sweet tea
9
How many neutrons does Nickel have?
28
59
58.6934
31
10
How many total atoms are in methane?
5
0
4
1
11
How many Carbon atoms are in Methane?
1
0
5
4
12
The charge of an electron is....
positive
neutral
need the mass to determine
negative
13
How many valence electrons does group 14 have?
none
you need the atomic mass and atomic number to determine
4
14
14
What did Mendeleev create?
periodic table
laws of physics
nobel gases
atom
15
There are 7 periods on the periodic table
False
True
16
How are elements arranged on the periodic table?
alphabetical order
increasing mass
melting point
increasing atomic number
17
When a reaction occurs and a new substance is created is a _____ change.
physical
chemical
18
The overall charge of an atom is positive due to the protons
False
True
