ELEMENT, COMPOUND or MIXTURE
ELEMENT, COMPOUND or MIXTURE
1.State whether each substance below is an element, a compound, or a mixture.
1.State whether each substance below is an element, a compound, or a mixture.
2. Complete the definitions using words from the box below.
2. Complete the definitions using words from the box below.
two or more
two or more
not chemically joined
only one
chemically joined
two or more
two or more
not chemically joined
only one
chemically joined
An element is made up of _________________ type of atom.
An element is made up of _________________ type of atom.
A compound is made up of _______________ different atoms ______________ together.
A compound is made up of _______________ different atoms _____________________
together.
A mixture is made up of ____________________ different atoms/moleculess
_______________________ together.
3. State whether each substance below is an element, a compound, or a mixture.
SUBSTANCE
Carbon
Sulphuric acid
Salt water
Magnesium oxide
calcium
CHEMICAL
FORMULAE
O2
H2SO4
NaCl + H2O
MgO
C
ELEMENT, COMPOUND
OR MIXTURE
A mixture is made up of ____________________ different atoms/moleculess
_______________________ together.
3. State whether each substance below is an element, a compound, or a mixture.
SUBSTANCE
Carbon
Sulphuric acid
Salt water
Magnesium oxide
calcium
CHEMICAL
FORMULAE
O2
H2SO4
NaCl + H2O
MgO
C
ELEMENT, COMPOUND OR
MIXTURE
NAME: ________________________
Section: ___________
NAME: ________________________
Section: ___________
ACTIVITY NO 3: ELEMENTS and COMPOUNDS
Objectives:
● identify the component elements in a compound; and
● determine the numbers of atoms in each element in a compound.
ACTIVITY NO 3: ELEMENTS and COMPOUNDS
Objectives:
● identify the component elements in a compound; and
● determine the numbers of atoms in each element in a compound.
Direction: Name the elements and the corresponding number of atoms in the following
compounds. Use the periodic table to guide you in answering.
Direction: Name the elements and the corresponding number of atoms in the following
compounds. Use the periodic table to guide you in answering.
Chemical
Formula
NaHCO3
Chemical Name
Sodium hydrogen
carbonate or Sodium
bicarbonate
CaMg(CO3)2 Calcium magnesium
carbonate
1. H2O2
Common
Name
Baking
soda
Dolomite
Hydrogen peroxide
Number of
atoms in each
element
1 sodium (Na)
1 hydrogen (H)
1 carbon (C)
3 oxygen (O)
1 calcium (C)
1 magnesium
(Mg)
2 carbon (C)
6 oxygen (O)
Chemical
Formula
NaHCO3
Chemical Name
Sodium hydrogen
carbonate or Sodium
bicarbonate
CaMg(CO3)2 Calcium magnesium
carbonate
Common
Name
Baking
soda
Dolomite
1. H2O2
2. CF2Cl2
Agua
Oxinada
Dichlorodifluoromethane Freon
Hydrogen peroxide
2. CF2Cl2
Agua
Oxinada
Dichlorodifluoromethane Freon
3. C3H8O3
Trihydroxy propanol
Glycerin
3. C3H8O3
Trihydroxy propanol
Glycerin
4. CaCO3
Calcium carbonate
Limestone
4. CaCO3
Calcium carbonate
Limestone
5. HCl
Hydrochloric acid
5. HCl
Hydrochloric acid
6. C8H8O3
Methyl salicylate
6. C8H8O3
Methyl salicylate
7. NaCl
Sodium chloride
Muriatic
acid
Oil of
wintergreen
Rock salt
7. NaCl
Sodium chloride
Muriatic
acid
Oil of
wintergreen
Rock salt
8. SiO2
Silicon dioxide
Quartz
8. SiO2
Silicon dioxide
Quartz
9. NaOCl
Sodium hypochlorite
9. NaOCl
Sodium hypochlorite
10. NaOH
Sodium hydroxide
Bleach
(laundry)
Lye/Caustic
soda
10. NaOH
Sodium hydroxide
Bleach
(laundry)
Lye/Caustic
soda
Number of
atoms in each
element
1 sodium (Na)
1 hydrogen (H)
1 carbon (C)
3 oxygen (O)
1 calcium (C)
1 magnesium
(Mg)
2 carbon (C)
6 oxygen (O)
0
