Elements
What is an element?
A. A pure substance made of only one type of atom. that cannot be broken down
B. Two or more different atoms chemically bonded
C. Made up of two capital letters
A. A pure substance made of only one type of atom. that cannot be broken down
How many oxygen atoms are in O₂?
2 atoms
A substance made of two or more different elements chemically bonded together is called what?
A. Molecule
B. Compound
C. Element
B. Compound
Which is a Chemical Symbol?
A. A2Si
B. In
C. Al
B. In
Which of the following is an element?
A. H₂O
B. CO₂
C. Fe
D. NaCl
C. Fe
How many total atoms are in H₂O?
3 atoms
Is NaCl an element, compound, and/or a molecule?
Compound & Molecule
Which is a Chemical Formula?
A. Al
B. Cu
C. CO
C. CO
How can you tell that O represents an element?
It has one capital letter
It is on the Periodic table
How many atoms of each element are in 2H₂O₂?
Hydrogen: 4 atoms
Oxygen: 4 Atoms
Is Al₂ an element, compound, and/or molecule?
Element & Molecule
Which element is Ag?
Silver
Is Au2 an element, compound, and/or molecule?
Element & Molecule
How many invisible ones are in atoms are in CH3NO₂?
2 invisible ones
Why is H₂O a compound?
It has two or capital letters
It contains more than one element
Which element is Li?
Lithium
A substance contains only one type of atom. What must it be?
An Element
How many total atoms are in 3C₆H₁₂O₆?
72 atoms
How many elements are on the Periodic Table?
118