Atomic Structure
Identifying Atoms
Periodic Table
Chemical Rections
Chemical Equations
100
What are the subatomic particles and their charges?
Proton, positive
Neutron, Neutral
Electron, Negative
100
What element is this?
Lithium
100
The elements in the same groups on the periodic table have similar...
Valence Electrons
Reactivity
Properties
100
What are the indicators of a chemical reaction?
Color, odor, light, temperature, precipitate, irreversible, gas
100
How many elements are present in this chemical formula?
AgNO3
3 elements
200
The quantity of which subatomic particle determines the element’s identity?
protons
200
How many neutrons are present in an atom of hafnium, Hf, with a mass number of 178?
106 Neutrons
200
Based on their placement on the periodic table, which element below is more reactive?
Magnesium, Barium, Sodium, or Neon
Sodium
200
A student creates a mixture of water and washing soda weighing 15 g and a mixture of water and epsom salts weighing 20 grams. He knows that when he mixes the two substances a chemical change will occur. According to the law of conservation of mass, what should the weight of the products be after he mixes them?
35 grams
200
Which formula has the least amount of atoms?
Carbonic acid H2CO3
Nitric acid HNO3
Phosphoric acid H3PO4
Sulfuric acid H2SO4
Nitric Acid
300
Which of the following list the elements in order, from having the fewest protons to having the greatest number of protons?
N, P, As, Sb, Bi
Rb,K,Na, Li
C, Ge, Si, Sn
I Cl, Br, F
N, P, As, Sb, Bi
300
I have 30 protons and 35 neutrons, what element am I?
Zinc
300
What does lithium, beryllium, and carbon have in common to their positions on the Periodic Table?
each element has 2 energy levels
300
An experiment is performed in which a crystalline substance is added to a beaker filled with room temperature water. The following observations are made:
1. The crystals dissolve
2. A precipitate is formed.
3. The bottom of the beaker feels warm to the touch.
4. Bubbles begin forming within the water.
All of the observations are evidence of a chemical change EXCEPT –
Observation 1
300
How many oxygen atoms are represented in the formula for
8 atoms of Oxygen
400
Where are the subatomic particles located in the atom?
Protons and neutrons are in the nucleus and surrounded but the electrons in the electron cloud
400
I have 37 protons, 48 neutrons and 1 valence electrons, what element am I?
Ribidium (Rb)
400
Which two atoms are in the same group in the periodic table?
Atoms 1 and 4
400
A student mixes two solutions, planning to produce a chemical reaction. Which of the following is evidence that NO chemical reaction is happening?
color change
odor change
temperature change
no observable change
No observable change
400
Which of the following lists all the elements that are present in a molecule of sulfuric acid, H2SO4?
Hydrogen, Sulfur, Oxygen
500
Which of these atoms has the GREATEST mass?
2nd atom
500
I have 5 energy levels and 4 valence electrons, what element am I?
Tin (Sn)
500
Which two groups, with their group name, on the periodic table has the highest reactivity?
Group 1 Alkali Metals
Group 17 Halogens
500
Which substance most likely caused a chemical reaction when mixed with water?
Substance 2
500
Which substances have the same number of carbon atoms?
Substance 1 and 3