Vocab
What are elements?
A substance which is made out of one specific element.
A stone with a volume of 15cm3 and a mass of 45g.What is its density.
3g/cm3
What element do we breathe in?
Oxygen
What is heterogenous mixture.
An unevenly mixed stuff.
A solid ball has a mass of 50 grams and a volume of 20 cm3. What is the density?
2.5g/cm3
What element is in group 2 period 4
Calcium
What is Valence Electrons?
Electrons found on the outermost layer.
A solid ball has a mass of 100 grams and a radius of 2 cm. What is the density?
2.98g/cm3
Who is the father of the periodic table?
Dmitri Mendeleev
What is solvent?
The liquid you mix something in.
A solid cylinder has a radius of 2 cm and a length of 7 cm. It has a density of 3.1 g/cm3. What is the mass of the cylinder?
272.69g
I am located in the halogen family.I have a mass of 79.90.What element am I?
Bromine
What is Thermal Expansion?
Increase in size of a substance when heated
Seawater contains approximately 3.5% salt by weight. How much seawater (in kg) contains 1 kg of salt? If the density of seawater is 1030 kg/m3, what is the volume of seawater, in liters, containing 1 kg of salt?
28.57kg
My symbol is Pb. What element am I?
Lead