WorksheetsH2O Quiz Lessons 8-11
Total questions: 19
Worksheet time: 10mins
The smallest unit of matter is -
element
proton
atom
compound
What is an element?
a chemical gas
a chemical compound
pure substance made of several atoms
pure substance made of only one type of atom
What are the two most common elements found in 4 different locations on Earth?
nitrogen and hydrogen
hydrogen and oxygen
nitrogen and oxygen
carbon and hydrogen
What are the reactants and products of a chemical equation?
Products are the starting material for a chemical reaction and the reactants are the resulting materials from the reaction
Reactants are the starting material for a chemical reaction and the products are the resulting materials from the reaction
reactants and products are the elements you bring together to make a new material
Reactants and products are found on the same side of the chemical equation.
The diagram shows the geometric structure of two atoms of hydrogen and one atom of oxygen combined to form a molecule of water (H2O).
mixtures
atoms
elements
bonds
Oxygen gas is written O2, which means it is a molecule made from two oxygen atoms. How could oxygen gas be classified?
Greenhouse gas
compound
element
noble gas
A substance made up of two or more different elements that have been chemically combined is called -
atom
compound
element
mixture
According to this equation, what happened to the carbon and oxygen?
They combined physically to form a new element
They combined chemically to form carbon and oxygen
They combined chemically to form a new compound
They combined physically to form a new mixture
The structure of an atom is shown. Which of these correctly represents the labeled parts, 1, 2, 3, and 4?
1. nucleus 2. electron 3. proton 4. neutron
1. nucleus 2. electron 3. neutron 4. proton
1. nucleus 2. proton 3. neutron 4. electron
1. proton 2. neutron 3. electron 4. nucleus
What does the subscript represent?
the number of atoms of an element in a compound
the number of elements in a compound
the number of molecules in a chemical formula
the number of atoms that can be combined
How many different elements are in the incomplete equation?
7
6
5
4
How is an element represented?
by a unique number created from the Latin name of the element
by a unique symbol using letters created from the Latin name
by a unique symbol using numbers created from Latin
by a unique number using the number of protons, neutrons, and electrons in the element
Choose all of the subatomic particles of an atom.
neutrons
protons
compounds
electrons
element
What are the charge of protons, neutrons, and electrons?
Protons are positive, neutrons are negative, and electrons are negative
Protons are positive, neutrons are neutral, and electrons are negative
Protons are negative, neutrons are negative, and electrons are positive
Protons are neutral, neutrons are neutral, and electrons are negative
What subatomic particles are found in the nucleus?
protons and electrons
electrons and neutrons
neutrons and protons
What is a chemical bond?
the positive charge of the atom
forces of an element
the negative charge of electrons
forces holding atoms together
What is a molecule?
group of 2 or more different elements held together by a bond
group of 2 or more atoms held together by a chemical bond
group of 3 or more atoms held together by protons
group of 3 or more different elements bonded together
What is the electron cloud?
the location of electrons
the location of the electrons, neutrons, and protons
the location of the electrons and neutrons
the location of the protons
All living and non-living things are made up of-
elements
chemicals
different atoms
chemical compounds
