Show:
Density
Density Calculations
Parts of the Atom
Parts of the Atom 2
Ions and Isotopes
100
How do you find the volume of an irregular object?
Water Displacement
100
What is the density of a 10g mass with a volume of 2.5 mL? (SHOW CORRECT UNITS!)
4 g/mL
100
What two particles reside in the nucleus?
Proton and Neutron
100
What do we call the electrons in the outer energy level of an atom?
Valence electrons
100
The amount of which particle changes to create an ISOTOPE?
Neutron
200
Name ONE common unit for density
g/mL, g/cm3, kg/L, kg/m3
200
What is the density of a 150 kg mass that has a volume of 30 cubic meters? (SHOW CORRECT UNITS!)
5 kg/m3
200
What particle determines the identity of the element?
Proton
200
You are given the atomic number and the atomic mass of an atom. How do you find the number of neutrons?
Atomic Mass - Atomic Number
200
The amount of which particle changes to create an ION?
Electron
300
In order to float, an object's density must be less than what?
ONE!
300
What is the mass of an object with a density of 15 g/mL and a volume of 3 mL?
45 g
300
What does the atomic number tell you about a neutral atom?
How many protons and electrons there are.
300
Beryllium has an atomic number of 4 and a mass of 9. How many of each particle does it have?
Protons: 4 Electrons: 4 Neutrons: 5
300
How many neutrons are there in an atom of Xenon-134 (Atomic number 54)?
80
400
How do you calculate Density?
Mass / Volume
400
An object has a volume of 200 mL and a density of 1.5 g/mL. What is its mass?
300 g
400
Which particle resides in the "cloud?"
Electron
400
How many electrons does a neutral atom of Neon (atomic number 10) have?
Ten
400
An atom of Phosphorus (Atomic Number 15) has a charge of -3. How many electrons does it have?
18
500
Does changing the SIZE of an object change its density?
YES!
500
If an object has a density of 2.00 g/mL and a mass of 10 g, how much space does it take up?
5 mL
500
What charges do the following particles have, in order? Proton, Neutron, Electron
+, 0, -
500
What two particles make up most of the mass in an atom?
Protons and neutrons
500
How many of each particle is in an atom of Nitrogen-15 (Atomic number 7) that has a charge of -3?
Protons: 7 Neutrons: 8 Electrons: 10