Protons, Neutrons and Electrons
Parts of an Atom
Atoms
States of Matter
Calculating Density
100
What is the subatomic particle with a negative charge?
Electron
100
These particles are not found in the nucleus.
Electrons
100
What is the smallest particle of the element silver (Ag) that can still be classified as silver?
Atom
100
Name the three main states of matter.
Solid, Liquid, Gas
100
What is the formula for density?
Mass / Volume
200
Which subatomic particles can be found in the nucleus of an atom?
Protons and neutrons
200
If an atom has 35 protons in its nucleus, how many electrons will it normally have?
35
200
A _______ is a group of two or more atoms that is held together by bonds.
Molecule
200
Substances have more kinetic energy in the _______ state than in the _______ state.
1) gas, liquid
2) liquid, solid
200
What is the density of a substance with a mass of 10g and a volume of 5 mL? Include units!
2 g/mL
300
What is the charge of an atom with 4 protons, 4 neutrons and 4 electrons?
Neutral
300
What atom/element has 35 protons in its nucleus?
Bromine
300
What is the atomic mass of iron?
55.845 (exact) or 56 (rounding)
300
Which of states of matter have a definite shape?
Solid
300
What is the density of a box measuring 2 inches by 5 inches by 2 inches and a mass of 50 grams?
2.5 grams / mL
400
Which element has the least number of protons?
Hydrogen
400
DAILY DOUBLE!!!!!!!
True or False - Anything that has mass and volume is made out of atoms.
TRUE - ALL MATTER IS MADE OUT OF ATOMS!!!!
400
What element has a greater atomic mass: Plutonium (Pu) or Americium (Am)?
Plutonium (Atomic Mass - 244)
400
If enough heat is taken away from the container of water, it will _________.
freeze/turn into a solid
400
To determine the density of an irregularly shaped object, a student dropped the object into 20 mL of H2O. The graduated cylinder rose to 28 mL of H2O. If the object had a mass of 56 grams, what was the density of the object? Include units!
7 g/mL
500
What is the charge of an atom with 11 protons, 11 neutrons and 10 electrons?
Positive
500
Draw an atom of helium.
500
Draw a ball and stick model of NH3.
500
What phase change is being shown below?
Sublimation (solid to gas)
500
List each object from highest to lowest density.
C, B, A