Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/9

Click to flip

9 Cards in this Set

  • Front
  • Back
The atoms in an element are:

1.All the same type
2.Two types joined together
3.About a hundred different types
1.All the same type
An atom consists of:

1.An electron surrounded by a nucleus
2.A nucleus containing electrons
3.A nucleus surrounded by electrons
3.A nucleus surrounded by electrons
What is the correct chemical symbol for sodium?

1.NA
2.Na
3.na
2.Na
What do we get when two or more different types of atom join together using chemical bonds?

1.A mixture
2.A compound
3.A new element
2.A compound
What are groups in the periodic table?

1.A row of similar elements
2.A column of similar elements
3.The boxes in the table
2.A column of similar elements
What do chemical bonds involve?

1.A nucleus moving from one atom to another
2.Electrons being transferred from one nucleus to another
3.Electrons being shared between two atoms
3.Electrons being shared between two atoms
A unit of magnesium carbonate contains one magnesium atom, one carbon atom and three oxygen atoms. What is its chemical formula?

1.MgC3O
2.Mg(CO)3
3.MgCO3
3.MgCO3
Which statement about chemical reactions is correct?

1.The mass of products equals the mass of reactants
2.The mass of products is more than the mass of reactants
3.The mass of products is less than the mass of reactants
1.The mass of products equals the mass of reactants
The correct balanced equation for the reaction between magnesium and oxygen is:

1.Mg + O ==> MgO2
2.Mg + O2 ==> Mg2O
3.2Mg + O2 ==> 2MgO
3.2Mg + O2 ==> 2MgO