Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
100
A gas is a form of matter that _____?
takes the shape and volume of its container
100
Who was the captain of the Polaris Ship?
Charles Hall
100
Elements in the same row or period hav e the same number of____
energy levels
100
at what number of valance electrons does a element become stable?
8
100
What is a atom?
smallest unit of matter that forms a chemical element
200
Homogeneous mixtures?
have a fixed composition
200
Isotopes of the same element have?
the same number of protons but different number of neutrons
200
___ is a poor conduct of heat and electricity
Nonmetals
200
What is Na3n
sodium (III) Nitride
200
What number is a mole
6.023e23
300
which one is a substance- Water, Air, Table Salt, or Sucrose
Air
300
What scientist the existence of positively charge particles in the nucleus
Rutherford
300
When a cation is formed it is smaller or bigger the neutral atom
smaller
300
is KF ionic or covalent and what is its name
Ionic, Potassium Floride
300
What is the empirical formula
gives the simplest whole number ration of atoms in a compound
400
name two out of three of intensive properties
color oder solubility
400
Which basic item uses infrared light? Color red, black light, remote control, heating microwave
Remote Control
400
the majority of the element on the periodic table are?
Metals
400
is there a reaction between ZnCl2+Au
Ionic, Potassium Floride
400
Using the molecular formula- the molar mass of a compound is 78.11 and the empirical formula is CH. what is the molecular formula?
C6H6
500
Describe the arrangement of particles of the states of matter
Solid- particles have little energy and are tightly packed together
Liquid-particles have some energy they flow past each other so they are not so close together
Gas-particles have a a lot of energy, flow past each other, the move am lot
500
Complete the following Chart
Proton has a what charge and what mass
Neutron has a what charge and what mass
Electron has a what charge and what mass
Proton- 1+ , 1
Neutron-0,1
Electron-1-,0
500
write out the electron configuration for lead
1s22s22p63s23p63d104s24p64d104f145s25p65d106s1
500
which pair of element os most likely from an ionic compound?
Calcium-Bromine
Argon-Hydrogen
Lithium-Cesium
Phosphorus
Calcium-Bromine
500
a substance has 4e25 molecules of hydrogen peroxide. how many hydrogen atom would be in a sample?
8e25