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STAAR Review- Atoms, Periodic Table and Chemistry Flashcards | StudBud
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STAAR Review- Atoms, Periodic Table and Chemistry
STAAR Review- Atoms, Periodic Table and Chemistry
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1
What is the charge of the electron?
electrical
positive
negative
neutral
2
What subatomic particles are in the nucleus?
neutrons only
protons and neutrons
protons only
protons and electrons
3
How can you use the periodic table to tell how many valence electrons an element has?
Atomic Number
Group Number
Mass Number
Period Number
4
Look at the formula, how many different elements are there?
three
one
two
four
5
What do you know when you subtract the mass number from the atomic number?
# of electrons
# of protons
# of neutrons
# of elements
6
How many valence electrons does Oxygen have?
Fourteen
Six
Eight
Sixteen
7
How do you know an element's reactivity from the Periodic Table?
Use the atomic number
Use the period number
Use the mass number
Use the group number
8
On which side of the periodic table do you find the metals?
Left
Right
Along the stair-step
9
Which of the following observations is a clue that a chemical reaction took place?
firecracker burning
Paper being shredded
Water boiling
Swim towel drying
10
Where is most of the mass of the atom?
In the electron cloud
in the nucleus
