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Worksheets2nd Six Weeks Exam Review
Total questions: 21
Worksheet time: 16mins
What is the grade you realistically expect to get on the Science Six Weeks Exam? Be honest with yourselves, your selection should be a reflection of your preparation.
90-100
80-89
70-79
60-69
Below a 50
Different atoms chemically bonded together are called what?
Elements
Compounds
Homogeneous
Heterogeneous
Different molecules unevenly combined physically are referred to as a ________________________.
Homogeneous Mixtures
Compounds
Heterogeneous Mixtures
Pure Substances
Different molecules and elements evenly combined physically are referred to as a ________________________.
Heterogenous Mixture
Compound
Homogeneous Mixture
Collage of atoms
How many valence electrons does an atom of Aluminum have? Al, Atomic number 13 and Atomic Mass 27.
14 e-
13 e-
10 e-
3 e-
Which of the following chemical formulas shows an element?
SHO4
H2O
He5
NaCl
What is the density of a box with a mass of 20 grams and a volume of 5 cm3? Density = Mass/Volume
10 g/cm3
5 g/cm3
4 g/cm3
2.5 g/cm3
Which of the following atoms has an Atomic Number of 5?
What does the Atomic Mass of an atom tell us?
The number of electrons and protons
The number of neutrons and protons
The number of Valence electrons
The number of the element
How many atoms are currently found on Earth?
100
118
112
108
How would you classify a molecule of H2O? (Water)
Homogeneous Mixture
Heterogeneous Mixture
Pure Substance
Element
Which of the following examples is a Homogeneous Mixture?
Matter that is physically combined is classified into which of the following categories?
Compounds
Mixtures
Pure Substances
Elements
Matter that is chemically bonded together is classified into which of the following categories?
Homogeneous Mixture
Pure Substances
Bohr Model
Mixtures
Which of the following examples is classified as a compound?
He5
NaCl
Ne3
Si8
How many neutrons would an Isotope of Neon have? Atomic Number 10 and Atomic Mass 23.
23 neutrons
10 neutrons
13 neutrons
8 neutrons
These 2 subatomic particles make up the atomic mass of an atom and are located in the nucleus of the atom.
Electrons & Neutrons
Valence electrons & Protons
Protons & Electrons
Protons & Neutrons
What is the atomic number of the atom depicted?
2
4
6
8
How many protons does the atom depicted have?
8
18
12
20
Which of the following examples is an element?
Why should you never believe an ATOM??????
(a)
