Periodic Table & Atom Models
CEMS
Ions & Formula Writing
Physical & Chemical Properties & Changes
Types of Chemical Changes
100
The number of protons in the atom of an element is also known as the _____________.
atomic number
100
Element, Compound, Mixture/Solution? Chlorine gas
Element
100
What is an ion?
An atom that gains or loses electrons.
100
What are THREE physical properties of sugar?
Many answers...solid, tastes sweet, white, small crystals, etc..
100
What type of chemical reaction? Na + Cl -----> NaCl
Synthesis/Addition
200
Groups are found in the ___________ __________ on the periodic table.
vertical columns
200
Element, Compound, Mixture/Solution? fruit salad
Mixture/Solution
200
Write the chemical formula for the following compound. H+1 P-3
H3P
200
Name one physical property and one chemical property of vinegar.
Many answers... Physical properties: liquid, clear, smells Chemical property: REACTS with baking soda, REACTS with magnesium ribbon
200
What type of chemical reaction? 2H2O -----> 2H2 + O2
Decomposition
300
Electrons found on the outer shell of an atom model are called ___________________.
valence electrons
300
Element, Compound, Mixture/Solution? Baking soda
Compound
300
Write the chemical formula for the following compound. Li+1 CO3-2
Li2CO3
300
What is a physical change you could do to vinegar?
Many answers...add food coloring, freeze it, boil it, add water
300
What type of chemical reaction? BaCl2 + Na2SO4 -----> NaCl + BaSO4
Double Replacement
400
The most reactive metals are found in group 1. What are they called?
Alkali metals
400
Element, Compound, Mixture/Solution? Hydrochloric acid HCl
Compound
400
Write the chemical formula for the following compound. Al+3 CO3-2
Al2(CO3)3
400
What is a chemical property of baking soda?
It REACTS with vinegar.
400
What type of chemical reaction? 2NaBr + Cl2 -----> 2NaCl + Br2
Single Replacement
500
If Zinc has an atomic number of 30 and a mass number of 65.39, how many protons, neutrons and electrons does it have?
protons: 30 neutrons: 35 electrons: 30
500
Element, Compound, Mixture/Solution? air
Mixture/Solution
500
What is the difference between an ionic bond and a covalent bond?
In an ionic bond electrons are given to taken. In a covalent bond electrons are shared between elements.
500
Name THREE indicators that a chemical reaction is taking place?
heat, light, unexpected color change, precipitate (solid) forms, bubbles, smoke, new substance produced
500
What type of chemical reaction? (HINT: There are two.) MgCO3 + 2HCl -----> MgCl2 + H2O + CO2
Decomposition and Single Replacement
M
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