Matter is anything that has ___________ and takes up ____________.
mass and space (volume)
Calcium
The center of an atom is called this: _____________
Nucleus
The little numbers that represent the number of atoms in an element are called __________
Subscripts
What is the equation for density?
Mass/Volume
Identify which item in this list does not belong:
Calculator
Air
Stanley Cup
Lightbulb
Fire
Fire (energy)
Elements on the periodic table can be classified into these three classes _____________,______________,and ______________.
Metals, Non-Metals, and Metalloids
Electron Shells
On the left side of an equation, we can see the ___________. These are the chemicals that react together to make the product.
Reactants
What unit of measure is missing from this equation? Mass(g) = Density(____) x Volume (ml)
g/ml
States of matter can be changed from solid, liquid, plasma and gas. The Phase Change Diagram tells us that the change from Gas to plasma is called __________________.
This family of elements make of group number 3 - 12
Transition Metals
This element has 49 electrons and is in period 5 on the periodic table.
Indium
Balance this equation:
__Hg2O --> __ Hg + __O2
2 Hg2O --> 4 Hg + 1 O2
Solve this equation:
Mass= 872.3g
Density= 4.5 g/ml
Volume= ______________
193.84 ml
When you walk outside, the water molecules from the air begin to collect and fog up on your glasses. This is an example of ___________.
Condensation
How many valence electrons does Potassium have?
1
This element is in the Noble Gas family and has 22 neutrons.
Argon
Balance this equation:
__GaF3 + __Cs -> __ CsF + __Ga
1 GaF3 + 3 Cs -> 3 CsF + 1 Ga
What is the calculation for mass?
Density X Volume
The phase change from solid to gas is called _______________.
Sublimation
What element has the atomic mass of 152 when rounded to the nearest whole number?
Europium
How many neutrons does Strontium have?
50
How many total atoms of Arsenic are in this formula?
3 (As2O)4
24
If water has a density of 1.0g/ml and the rock has a density of 1.23 g/ml: Would the rock float or sink when placed in the water?
sink