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WorksheetsChemistry ILT #1
Total questions: 20
Worksheet time: 11mins
An atom has the same number of protons as electrons, so it has no charge.
True
False
It is not possible to know
An ion that has 2 more electrons than protons will have a charge of:
2+
2-
No charge
The image shows a single element from a full periodic table. The number at the top....
Is the Mass Number, which represents the number of protons in the nucleus
Is the Atomic Number, which represents the number of electrons in the outer shell
Is the Mass Number, which represents the number of protons and neutrons in the nucleus
Is the Atomic Number, which represents the number of protons in the nucleus
How many neutrons are there in an atom of Tungsten?
74
184
184 - 74 = 110
You cannot know from this information
The Earth’s early atmosphere was formed by
animals breathing.
global warming
plants growing
volcanic activity
The period of a element in the periodic table tells us:
How many electrons are in the outer shell
How many electron shells an element has
The properties of the element
How big the element is
What two pieces of equipment can you use to measure 25cm3 of an acid?
Beaker
Conical Flask
Measuring cylinder
Pipette
Which of the following compounds are hydrocarbons?
C2H4
C4H10O
C3H7Br,
C4H10
What is the definition of Cracking?
A chemical reaction that releases energy through light or heat.
A reaction in which smaller saturated hydrocarbon molecules are made into larger, more useful hydrocarbon molecules
A reaction where some compounds break down when heated, forming two or more products from one reactant.
A reaction in which larger saturated hydrocarbon molecules are broken down into smaller, more useful hydrocarbon molecules
This is any combination of two or more atoms from different elements that are chemically combined.
compound
molecule
element
pure substance
This picture represents which of the following?
Element
Compound
Molecule
Carbon has 6 electrons. Which atom is carbon?
Atom A
Atom B
Atom C
Atom D
What is the atomic number of lithium?
7
3
4
10
What is an element?
2 or more substance not chemically combined
substance made of 1 type of atom
substance made of more than one type of atom chemically joined together
atoms of the same element with different number of neutrons
What is John Dalton's model of the atom?
Electrons orbit in fixed energy levels (shells)
Nucleus at the centre of the atom
Protons and neutrons found in the nucleus
A solid sphere that could not be divided into smaller parts
What did Niels Bohr discover about the Atom?
Electrons orbit in fixed energy levels (shells)
Nucleus at the centre of the atom
Protons and neutrons found in the nucleus
A solid sphere that could not be divided into smaller parts
How do you calculate the number of neutrons in an atom?
atomic number + mass number
Mass number - atomic number
Atomic number - mass number
Mass number x atomic number
What sub-atomic particle is labelled A?
Neutron
Electron
Ion
Atom
Select two words that describe this diagram
molecule
element
atom
compound
How many elements are in C6H12O6?
1
2
3
6
