Atoms
Elements
Compounds
Chemical formulae
Name that element
(very difficult)
(very difficult)
100
What is an atom?
An atom is the smallest part of an element that can exist.
100
What is on the periodic table? And about how many are there?
Elements and there are about 100
100
What is a compound?
A compound is a substance made up of atoms of two or more elements.
100
What is the chemical formulae of water?
H2O
100
Fe
iron
200
How many atoms are in this formula?
H2O
Three atoms:
Hydrogen = 2
Oxygen = 1
200
What is an element?
A substance that cannot be broken down into other substances and are made up of one type of atom.
200
How are compounds made?
Atoms from one element bond to other atoms from different elements.
200
What does a compound show?
A compound shows the relative number of atoms of each element in the compound.
200
Ag
silver
300
If there are 3.0 x 1024 atoms in a kilogram of gold. How many grams of gold would I have with 3.0 x 1023 atoms of gold?
100 grams
300
C, H, Au, and O stand for what elements?
Carbon, Hydrogen, Gold, and Oxygen
300
Is this a compound?
No, because all atoms are the same.
300
What is the name of the compund?
CO2
Carbon dioxide?
300
Na
sodium
400
How many atoms are in this formula: H2SO4
7 atoms.
Hydrogen = 2
Sulfur = 1
Oxygen = 4
400
How many elements are in this formula: H2O
2
400
Which is not a compound? CO, H2, NH3, CH4
H2 it's a molecule 2 atoms from the SAME element bond together.
400
What is the name of the compound and its chemical formulae?
1 sulfur atom + 2 oxygen atoms
Sulfur dioxide (SO2)
400
Hg
mercury
500
How many atoms are in this formula: 2(C4H10)
28 atoms
500
How many elements and atoms are in this formula?
Ca3(PO4)2
3 elements (Ca, P, O)
13 atoms (3-Ca, 2-P, 8-O)
500
Are the properties of a compound the same as the properties of the elements it is made of? Explain your answer.
No, when the atoms from an element bond (join) to other elements they create a new substance that has its own properties.
500
Identify the correct formula
A. C3H7O3
B. C2H4O2
C. C2NO2H4
B. C2H4O2
500
K
potassium