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Physical Science Final Exam spring 2023

Last updated over 2 years ago
75 questions
1

Which of the following is an element?

1

Which of the following is a compound?

1

Choose one physical property.

1

Choose one chemical property.

1

The difference between a compound and a mixture is that the elements in a compound are chemically combined, but the components of a mixture are not.

1

When a substance melts, or boils, or freezes, it is a _________ change.

1

___________ changes can only be identified after the change has happened.

1

Phases (components) of a mixture can be easily seen in a:

1

A(n) ________ is the simplest form of matter with its own unique properties, while a(n) _________ is chemically combined in definite proportion.

1

A piece of paper is torn into small pieces.

1

An iron shovel is left outside and becomes covered in rust.

1

Copper will react with water to form green tarnish.

1

Sulfur is yellow and smells of rotten eggs.

1

The change from solid to liquid is called

1

Niels Bohr proposed this model of the atom, whose name comes from the position of electrons in orbits around the nucleus. What is it called?

1

An element’s atomic number is the

1

If an element has 9 protons and 10 neutrons, its atomic mass will be

1

If an element has 9 protons and 10 neutrons, the atomic number will be

1

Which region of the atom has the most mass?

1

Which region of the atom occupies the most space?

1

An atom has a neutral charge because

1

Elements that have the same number of protons but different numbers of neutrons are called

1

Choose the element that is liquid at room temperature.

1

Metals are

1

What is the most reactive element on the periodic table?

1

Elements within each group of the periodic table share similar chemical properties because they have identical

1

Which of the following is a noble gas?

1

Which of the following is an alkali metal?

1

Which of the following is a halogen?

1

Which of the following is a transition metal?

1

Which of these is a property of covalent compounds?

1

Metals are found on the __________ side of the periodic table, and they form __________, which are positively charged.

1

What type of bond would form between nitrogen and oxygen?

1

This type of bonding has valence electrons that move freely throughout the substance.

1

An ionic bond will form between

1

Metallic ions use the element name with no changes when naming compounds.

1

Non-metallic ions use the root portion of the element name with “ide” added when naming compounds.

1

Prefixes are used when naming

1

The prefix for "two" is

1

The prefix for "five" is

1

The formula for phosphate is

1

The formula for sulfate is

1

The formula for ammonium is

1

The formula for hydroxide is

2

The name of this compound, Mg3P2, is

2

Name this compound: NaOH

2

Name the following: MgO

2

Name this compound: Na3N

2

The formula for carbon tetrachloride

2

Formula for phosphorus pentachloride

1

Name this compound: SO2

1

Name this compound: CO

1

What is the formula for sodium chloride?

2

What is the formula for carbon tetrahydride?

2

What is the formula for copper(II) chloride?

2

What is the formula for potassium phosphate?

2

What is the formula for this compound: ammonium sulfate

1

A chemical equation must have an equal number of atoms on the left and right sides of the arrow.

1

In a chemical equation, the arrow means

1

A synthesis reaction has the general form of

2

Products of combustion when CH4 reacts with oxygen would be:

1

Single replacement reactions can occur when the element added to an ionic compound is less active than the metal in the compound.

1

When predicting products of a double replacement reaction, you must use the activity series of metals.

1

AB --> A + B is the common form of a __________________ reaction.

1

In the activity series of elements, their reactivity decreases as you move lower in the list.

1

Which of these elements is the most reactive?

2

Which of these chemical equations is correct?

2

Will this reaction take place? Mg + ZnCl2 —> MgCl2 + Zn

2

Will this reaction take place? 2 Ag + Li2O —> 2 AgO +2 Li

2

One of the products of this reaction [ Mg(OH)2 + NaCl —> ?] is

3

Balance this reaction: _CS2 + _O2 → _CO2 + _SO2

3

Balance this reaction: _CO2 + _H2O → _C2H2 + _O2 (Remember to simplify if needed.)

2

In the following balanced equation, 4Al + 3O2 --> 2Al2O3 , the four is a

2

In the following balanced equation, 4Al + 3O2 --> 2Al2O3 , the three following the oxygen (O) is a

2

Coefficients tell the number of ______________ of a compound present in a chemical reaction, and a subscript tells the number of ____________ present in a compound.