Chemistry - Semester 1 - Practice Final

14 Questions | By Nickstauffer | Updated: Mar 22, 2022 | Attempts: 7810

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Chemistry - Semester 1 - Practice Final - Quiz

Chemistry Final. Mrs. O'Gorman. Semester 1. 2010.

Questions and Answers

1.

The sate of matter for an object that has definite shape and definite volume is
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gaseous
- D.
  
  Mixed
- E.
  
  Elemental
2.

Which of the following involved a chemical change?
- A.
  
  Digesting food
- B.
  
  Melting ice
- C.
  
  Boiling water
- D.
  
  Chopping wood
- E.
  
  None of the above
3.

A sample of an element contains only one kind of
- A.
  
  Pure substance
- B.
  
  Mixture
- C.
  
  Isotope
- D.
  
  Atom
- E.
  
  None of the above
4.

A pure substance made up of more than one kind of atom is called
- A.
  
  An element
- B.
  
  A compound
- C.
  
  A heterogenous mixture
- D.
  
  A homogenous mixture
- E.
  
  An alloy
5.

In a chemical change
- A.
  
  A phase change must occur
- B.
  
  A phase change never occurs
- C.
  
  The original material can never be regenerated
- D.
  
  The products are different substances from the starting materials
6.

Which of these is a chemical property?
- A.
  
  Helium is a gas
- B.
  
  Water has a high specific heat
- C.
  
  Water boils at 100ªC
- D.
  
  Neon is very nonreactive
- E.
  
  Potassium is a soft, shiny metal.
7.

The symbol, Ca⁺¹ can be used to represent
- A.
  
  A calcium ion
- B.
  
  A krypton ion
- C.
  
  Potassium
- D.
  
  A potassium atom
- E.
  
  A krypton atom
8.

In chemistry, a formula is used to represent
- A.
  
  An element
- B.
  
  An atom
- C.
  
  A compound
- D.
  
  All the above
- E.
  
  None of the above
9.

How many oxygen atoms are indicated in the formula Ca₃(PO₄)₂?
- A.
  
  6
- B.
  
  4
- C.
  
  13
- D.
  
  8
- E.
  
  None of the above
10.

The total number of atoms indicated by the formula Fe₂(SO₄)₃ is
- A.
  
  5
- B.
  
  7
- C.
  
  19
- D.
  
  10
- E.
  
  17
11.

The chemical formula Fe₂(SO₃)₃ indicates
- A.
  
  Three atoms of iron and three atoms of Sulfur
- B.
  
  Six atoms of each element
- C.
  
  Six atoms of oxygen
- D.
  
  Two atoms of iron, three atoms of oxygen, one atom of sulfur
- E.
  
  None of the above
12.

How many protons, electrons, and neutrons respectively does ²³⁵U have?
- A.
  
  92, 143, 235
- B.
  
  92, 92, 143
- C.
  
  92, 92, 235
- D.
  
  74, 53, 235
- E.
  
  74, 92, 235
13.

Atoms of the same element having the same atomic number but different mass numbers are called
- A.
  
  Orbitals
- B.
  
  Isotopes
- C.
  
  Neutrons
- D.
  
  Isomers
- E.
  
  Nuclei
14.

An element's most stable ion forms an ionic compound with chlorine having the formula XCl₂. If the ion of element X has a mass of 34 and 18 electrons, what is the identity of the element, and how many neutrons does it have?
- A.
  
  Ar, 16 neutrons
- B.
  
  Ca, 14 neutrons
- C.
  
  Ar, 18 neutrons
- D.
  
  S, 18 neutrons
- E.
  
  K, 20 neutrons