Atomic Structure and Masses Quiz

Which subatomic particle remains constant for an ion of 40 2+ Ca?

Number of protons

Is stretching copper into thin wire an example of an intensive or extensive property?

Intensive property

Which of the following is an example of a physical change?

Boiling water

Identify the type of mixture that milk belongs to:

Homogeneous mixture Signup and view all the answers

What property is associated with one mole of carbon having a mass of 12.01 grams?

Extensive property Signup and view all the answers

Which subatomic particle is located outside the nucleus of an atom?

Electron Signup and view all the answers

What is the electrical charge of a cation?

Positive charge Signup and view all the answers

Which particle has a mass closest to 1 amu?

Neutron Signup and view all the answers

What type of ions contain more electrons than protons?

Anions Signup and view all the answers

How do you find out the number of protons in an atom?

Same as the atomic number of an element Signup and view all the answers

Which type of ion is derived from a single atom?

"F-" Signup and view all the answers

Which type of change is demonstrated when water boils at 100 oC?

Physical change Signup and view all the answers

What type of change occurs when vinegar reacts with baking soda?

Chemical change Signup and view all the answers

In which category do pure substances belong?

Elements Signup and view all the answers

What classification of matter comprises more than one substance in varying proportions?

Mixtures Signup and view all the answers

Which substance is an example of an element?

Oxygen Signup and view all the answers

What type of change is observed when iron rusts in a damp environment?

Chemical change Signup and view all the answers

What is the significance of the nucleus in an atom?

It is responsible for 99.9% of the atom's mass. Signup and view all the answers

What is the electric charge of one proton?

+1.602 x 10^-19 C Signup and view all the answers

What does the atomic number of an atom represent?

Number of protons in the atom Signup and view all the answers

How do protons and electrons contribute to the overall charge neutrality of an atom?

Protons have a positive charge while electrons have a negative charge that cancel out. Signup and view all the answers

What is an isotope?

Atoms with different numbers of neutrons Signup and view all the answers

Why do isotopes of an element generally have similar chemical properties?

Because protons and electrons govern chemical properties Signup and view all the answers

What are the four different states or phases in which matter exists?

Solid, liquid, gas, plasma Signup and view all the answers

Which type of property depends on the amount of matter?

Extensive properties Signup and view all the answers