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WorksheetsNMAT MASTERCLASS - EXAM 1
Total questions: 25
Worksheet time: 50mins
Which branch focuses on substances that do not contain carbon atoms?
Analytical Chemistry
Organic Chemistry
Biochemistry
Inorganic Chemistry
Which branch of chemistry focuses on the study of chemical makeup and processes within living organisms?
Biochemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Which of the following best describes Organic Chemistry?
Study of energetics of chemical system
Study of carbon-containing compounds
Study of compounds w/o carbon
Study of biomolecules and metabolism.
Which of the following is NOT a homogeneous mixture?
Seawater
Bronze alloy
Salad
Air
What is the definition of an element?
A pure substance made of two or more different types of atoms
A pure substance that is always metallic
A pure substance that can be broken down using chemical means
A pure substance that cannot be broken down into simpler substances
Which of the following is a compound?
Oxygen
Water
Nitrogen
Steel Alloy
Which separation method relies on differences in boiling points?
Distillation
Filtration
Chromatography
Mechanical separation
If you want to separate iron filings from a mixture of sand, which method should you use?
Filtration
Distillation
Evaporation
Magnetic separation
In paper chromatography, what property of substances allows them to be separated?
Their boiling points
Their solubility in water
Their different affinities for the stationary and mobile phases
Their color intensity
What is one advantage of using centrifugation over other separation methods?
It requires less time than evaporation.
It can separate mixtures with very small particle sizes.
It can effectively separate components based on density differences in a short time.
It does not require any additional equipment.
What is the best method to separate dyes?
Filtration
Distillation
Chromatography
Evaporation
Which of the following elements is a metalloid?
Na
As
Ca
Ne
What is the primary reason that metals are good conductors of electricity?
They form covalent bonds.
They are ductile.
They have high melting points.
They have free-moving electrons.
Which of the following properties is characteristic of metals?
Poor electrical conductivity
Lack of luster
Malleability
Brittle
Non-metals are generally known for which of the following properties regarding electrons?
They conduct electricity well.
They lose electrons easily.
They gain electrons
They are malleable and ductile.
Which of the following elements is commonly classified as a metalloid and is widely used in semiconductor technology?
Sodium
Silicon
Iron
Mercury
What do you the horizontal row in the periodic table?
Group
Family
Period
Atomic number
How many valence electrons are there in element carbon?
3
4
5
6
What is the term used to describe the innermost electron in an atom?
Core electrons
Valence electrons
Shell electrons
Anti-electrons
What is the name of the compound with formula of SnO2?
Tin (II) oxide
Stannic Oxide
Tin (I) oxide
Stannous oxide
What do you call the phase transition from solid to gas?
Deposition
Sublimation
Melting
Vaporization
Which of the following is an intensive property?
Density
Size
Mass
Volume
What is the chemical name for the compound Mg3(PO4)2
Magnesium (III) phosphate
Magnesium Phosphite
Magnesium Phosphate
Magnesium (II) Phosphate
Which of the following is an ionic compound?
SeO4
HCl
CH4
KCl
Which of the following is a binary ionic compound?
Potassium Cyanide
Lithium Hydroxide
Sodium Phosphide
Aluminum carbonate
