Atoms
Which subatomic particle has a negative charge?
An Electron
How many periods are on the periodic table?
7
What type of substance is milk?
A mixture
(even better answer would be a homogeneous mixture)
What is the mass number of Chlorine? (you may look at the periodic table)
~35amu (I will accept 35, 34, or 36, depending on the ptable)
Color is a _____________ property & a ____________ change.
Color is a physical property & a chemical change.
Which subatomic particles is so small that basically has no mass?
An electron
How many rings in the cloud does Phosphorous (P) have?
3 rings
What is formed when 2 or more different atoms combine chemically?
A compound
Which atom is found in period 2, group 17?
Flourine (I will also accept F)
What are the two main chemical properties?
Flammability & Reactivity
MOST of the atom's volume is made of...
Empty space
(I will also accept "nothing")
How is the periodic table arranged?
Atomic number
(I will also accept "number of protons")
What is the difference between a HOMOGENEOUS & HETEROGENEOUS mixture?
Homogeneous - looks the same throughout
Heterogeneous - can pick out different parts
Most of the atom's mass is made of...
The nucleus (I will also accept protons & neutrons)
What is the property that lets something dissolve in something else...
AND is it chemical or physical?
Solubility
Physical
What is the mass of an atom that has 80 protons, 120 neutrons, and 75 electrons?
200 atomic mass units (I will accept this answer without units)
How many valence electrons does every atom in group 2 have?
2
List at least 3 signs of a compound being made or broken up?
An extra 200 points is available for any group that can list all 6 signs.
*Formation of a precipitate
*Color change
*New smell
*Release/absorption of heat
*Release of light
*Bubbles (release of gas)
(I will also accept forming a new substance)
How many valence electrons does Carbon have?
Four
What are atoms called when they have an uneven number of protons & electrons?
Ions
An isotope
Correctly draw and label a Bohr model for Sodium (Na)
See board
To form a compound, 2 or more atoms must share...
Valence electrons
An atom with 80 protons, 120 neutrons & 75 electrons has what sort of charge?
+5
How can you predict that 2 elements will bond with similar things?
They are located in the same group on the periodic table.