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WorksheetsMatter and Energy Pre-Assessment
Total questions: 41
Worksheet time: 10hrs 15mins
Which subatomic particle has a mass of 1/1836 amu, a negative charge, and is located outside of the nucleus?
Protons
Neutrons
Electrons
Which subatomic particle has a mass of 1 amu, a neural charge, and is located inside the nucleus?
Protons
Neutrons
Electrons
Which subatomic particle has a mass of 1 amu, a positive charge, and is located inside the nucleus?
Protons
Neutrons
Electrons
What characteristic is the most important information to know when trying to determine an element’s identity?
Protons
Valence Electrons
Electrons
Neutrons
Identify the element using the Bohr model.
He
Li
Be
Na
Which element shown below would be the least reactive?
Na
Ne
Cl
Using a Periodic Table, identify two elements that would have the same number of valence electrons as Calcium (Ca).
Mg and Ba
K and Sc
Sr and Sc
Using a Periodic Table, identify two elements that would have the same number of energy levels as Oxygen (O).
S and Se
Ne and Li
Be and Al
Na and F
The chemical formula for Copper Sulfate is shown below. How many elements that make up this compound?
CuSO4
6
4
3
2
How many atoms of phosphorus are represented in the chemical formula below?
Sr3(PO4)2
1
2
8
What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass of 112.
112
144
160
48
What is the difference between the number of electrons in an atom of selenium, Se, and the number of electrons in an atom aluminum, Al?
21
35
65
Identify each category below as Metals, Nonmetals, or Metalloids based on the information shown on the data table.
A. Metals B. Nonmetals C. Metalloids
A. Metals B. Metalliods C. Nonmetals
A. Nonmetals B. Metalloids C. Metals
A. Metalloids B. Metals C Nonmetals
which of the following is not evidence that a chemical reaction has taken place?
Gas produced
Unexpected color change
Change in energy (light or temperature)
Change of size or shape
A student mixes two chemicals and sees the production of bubbles, the formation of a precipitate, a change in shape, and heat being produced.
How many of these observations indicate a chemical change?
2
3
4
What determines reactivity?
Protons
Neutrons
Electrons
Valence Electrons
What group is nonreactive?
1
2
17
18
What group is the most reactive metals?
1
2
17
18
What group is the most reactive nonmetals?
1
2
17
18
How many energy levels does Al have?
2
3
12
13
What do you know about Matter and Energy? (Please answer what you know in 1-2 sentences).
