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18 Cards in this Set

  • Front
  • Back
The number of elements are

a. about 4
b. about 50
c. about 100
.
The particle in the atom that is found outside the nucleus is the

a. electron
b. proton
c. neutron
.
An example of a physical property is

a. "this substance is blue"
b. "this substance can burn"
c. "this substance reacts with acid"
.
Lemonade is an example of

a. an element
b. compound
c. solution
.
Which of these is an example of a compound?

a. iron
b. hydrogen
c. rust
.
Sodium and chlorine con combine for form

a. bone
b. salt
c. water
.
The physical property that describes how much a substance will stretch or bend if

a. hardness
b. elasticity
c. magnetism
.
Ash is a new substance formed when

a. a fruit turns moldy
b. pyrite comes in contact
with acid
c. wood is burned
.
When two or more atoms join together, they form a

a. combination
b. model
c. molecule
.
Knowing about chemical properties can help in identifying

a. protons and neutrons
b. mixtures and solutions
c.elements and compounds
.
Iron atoms combine with oxygen atoms to form

a. fool's gold
b. rust
c. ashes
.
periodic table
compound
water
vinegar
solid
liquid
A chart that classifies elements by their properties is a ___________________
An example of a change that is NOT a chemical change is

a. batter baked into a ckae
b. cut apples turning brown
in the air
c. cucumbers tossed with lettuce for a salad
.
.
When the atoms of different elements combine to make a new substance, the substance is called a _________________
.
A substance that acan be combines with baking soda to produce carbon dioxide is
______________
.
An ice cube is a _____________
.
H O is the symbol for ________
.
A puddle of water is a _______