True or False
For an atom to be neutral, the number of electrons must equal the number of neutrons
False
Aluminum oxide is a chemical formula with two aluminum atoms and three oxygen atoms. What is the correct chemical formula?
Al2 O3
What charge do Protons have?
What is Positive
What is the name of the given to the units that make up covalently bonded compounds?
What is Molecules?
How many dots are shown in the electron dot diagram for calcium, element number 20?
What is two?
A water molecule is polar because it has a positive charge on one end and a negative charge on the other.
What is True
Water is a chemical formula with two hydrogen atoms and 1 oxygen atoms. What is the correct chemical formula?
H2O
What charge do electrons have?
What is Negative?
Dot diagrams are used to represent what?
What is Valence electrons?
How many dots are shown in the electron dot diagram for calcium, element number 87?
What is one?
The elements on the far right of the periodic table are metals.
What is False
Glucose is a chemical formula with 6 Carbon atoms 12 Hydrogen atoms and 6 oxygen atoms. What is the correct chemical formula?
C6H12O6
What charge do neutrons have?
What is neutral?
The attraction between positive and negative ______forms an ionic bond.
What is Ions?
How many dots are shown in the electron dot diagram for calcium, element number 20?
What is 8?
Particles formed when the covalent bonds of atoms are called ions.
What is False?
Iron oxide is a chemical formula with two Iron atoms and three oxygen atoms. What is the correct chemical formula?
Fe2O3
The energy levels of an atom are occupied by?
What are Electrons?
Most of the mass of an is atom is found where?
What is the nucleus?
How many dots are shown in the electron dot diagram for calcium, element number 117?
What is seven?
Substances are either elements or compounds.
What is True
Methane is a chemical formula with one carbon atom and four hydrogen atoms. What is the correct chemical formula?
CH4
What is an example of negative ion in it ionic compounds?
What happens to the electrons in a covalent bond?
What is the atoms share an electron?
How many dots are shown in the electron dot diagram for calcium, element number 56?
What is two?