Intro
How many grams are in 1 kilogram?
1,000
What are the 3 subatomic particles and where are they located?
protons and neutrons in nucleus, electrons in cloud
How many valence electrons do the halogens have?
7
Which type of chemical bond generates electricity in solution?
ionic
Classify this reaction:
Mg + 2HCl → MgCl2 + H2
single replacement
The unit for length in the metric system
meter
What is the atomic mass of an atom that has 10 protons, 10 electrons, and 15 neutrons?
25 amu
Atomic radius (increases/decreases) as you go across a period
decreases
magnesium chloride
Identify the precipitate
Li2S + 2AgNO3 → 2LiNO3 + Ag2S
silver sulfide
How many mL are in one centiliter?
10
If Uranium-235 undergoes alpha decay, the products will be an alpha particle and _______
Th-231
What element is this: 1s22s22p2
carbon
What is the formula for chromium (II) bromide?
CrBr2
Balance:
___ AgNO3 + ___ H2S -> __Ag2S + ___HNO3
2, 1, 1, 2
How many L are in one mL?
.001
What charge will a neutral atom have if it gains two electrons?
2-
How many electrons does a S orbital hold?
2
Name this compound: Mg(ClO3)2
magnesium chlorate
What are the products of a combustion reaction?
carbon dioxide, water
Describe an indicator of a chemical change
color change, heat, gas, bubbles
What color light is emitted when an electron jumps from n=3 to n=2?
red
What is the electron configuration of silicon?
1s22s22p63s23p2
give an example of a cation
Ca2+
Determine the products and the precipitate
AlBr3 + H3PO4 ->
AlPO4 + 3HBr
precipitate: AlPO4