PT 1
What type of charge does a neutron have?
Neutral or None
Why are elements grouped the way they are on the periodic table?
They have similar properties
In the modern periodic table of elements, how are the elements arranged?
By their atomic number
What type of charge does a proton have?
Positive
What type of charge does an electron have?
Negative
If two elements have very similar properties, what can be concluded about these elements?
they are located in the same family/group of the periodic table.
Using Si (Silicon) which has the number 14 above the element symbol and the number 28.1 below the element symbol - what is the atomic mass for Silicon?
28 (28.1)
Which pair of elements have the most similar properties? LOOK at your periodic table. Is it H (Hydrogen) and He (Helium); Na (Sodium) and K (Potassium); N (Nitrogen) and Si (Silicon); or Ca (Calcium) and Fe (Iron)?
Na (Sodium) and K (Potassium)
Which subatomic particles are found in the nucleus of an atom?
protons and neutrons
What subatomic particles of an atom are found outside of the nucleus?
Electrons
What is matter made up of?
atoms
Out of these elements which one is considered a noble gas? Hydrogen (H), Iron (Fe), Silver (Ag), or Boron (B)
Hydrogen (H),
Which element has a greater atomic number and atomic mass Zinc (Zn) or Mercury (Hg) and how do you know?
Mercury (Hg) - it is in a lower period but the same group as Zinc (Zn)
From these statements which is true: a) Atoms are the same for all elements. b) Atoms are made up of the same number of protons and neutrons. c) Atoms are arranged in the periodic table according to number of protons. d) Atoms are made up of protons and electrons in a nucleus surrounded by orbiting neutrons.
C - Atoms are arranged in the periodic table according to number of protons.
protons and neutrons in the nucleus and electrons orbiting the nucleus in the electron cloud.
Using your periodic table of elements which element has an atomic number of 12 and an atomic mass of 24.3?
Mg (Magnesium)
If Lithium (Li) has an atomic number of 3, atomic mass of 7, is in period number 2, and group number 1; how many electrons should be included on the list?
3
Mendeleev designed the periodic table he determined that all elements on the table are made up of the same fundamental particles. What are those particles?
protons, neutrons, and electrons
In order for an atom to have a neutral charge, what must it have an equal number of?
electrons and protons
The atomic theory explains that all matter is made up of tiny indivisible particles called atoms. What is this an example of?
A scientific theory
What is the atomic theory?
Scientific theory explaining that all matter is made up of tiny indivisible particles called atoms.
If looking at a periodic table with group 1, 2, 17, and 18 shaded and a student says that two elements from group C share properties but another says it is an element in group C and one from group D that share properties - which student would be correct?
Student that says two elements from group C share properties.
If O (oxygen) has an atomic number of 8 what element would be most similar to it in terms of its chemical properties? Use your periodic table!
Sulfur (S)
If Cu (Copper) is in the same group with Au (Gold) but in a lower period on the periodic table what does that mean?
Au (gold) has a greater atomic number and a greater atomic mass than Cu (Copper)
If an element has an atomic number of 9 and an atomic mass of 20 - what does this tell us?
There are 9 protons and 11 neutrons in the nucleus.