Common Elements
Physical or Chemical Change?
Metals, Metalloids,
Nonmetals
Nonmetals
Elements and Compounds
Space
100
What is the most common element found throughout Earth?
Oxygen
100
Mowing the lawn
Physical Change
100
These elements are located along the stair step of the periodic table.
Metalloids
100
What element is located in group 2, period 4?
Calcium (Ca)
100
How did the space shuttle differ from other previous spacecrafts?
F. The space shuttle was the first reusable spacecraft.
G. The space shuttle was the first spacecraft to land on the Moon.
H. The space shuttle was the first spacecraft to offer space tourism.
J. The space shuttle was the first spacecraft that could not orbit Earth.
F. The space shuttle was the first reusable spacecraft.
200
According to the graph, which two elements are most common in the Earth's crust?
Silicon and oxygen
200
Burning paper
Chemical Change
200
Elements that are normally in a gas form, that are dull, brittle, and poor conductors
Nonmetal
200
According to the periodic table, which of the following is the best example of an element?
A.) Ne4
B.) CO
C.) H2O
D.) ClNa
A.) Ne4
200
The amount an object weighs depends on the presence of —
gravity
300
Which element comprises the greatest amount of the earth’s crust?
oxygen
300
Shaking a soda and allowing it to fizz
Physical Change
300
Classify the following.
Metal
300
How many elements are in the chemical formula?
Na3HO5
3
300
True or False. The length of year on Jupiter is longer than Mars length of year.
True
400
What are the 2 most abundant elements found in the human body?
Oxygen and carbon
400
Your body digesting food
Chemical Change
400
Silicon (Si) is a ___________ .
metalloid
400
Two or more elements chemically combine to form a _____________ .
compound
400
The two missing inner planets are
Venus and Earth
500
Which element comprises about 5% of Earth's crust? Provide the element name.
Iron
500
Two solutions, A and B, are at room temperature. They are mixed to produce solution C. The temperature of solution C is significantly higher than room temperature. Which of the following likely occurred?
F. A new substance was formed.
G. The color of the solution changed.
H. A gas was produced.
J. The solutions went through a physical change.
F. A new substance was formed.
500
Metal is a property used in pots and pans. Why is metal a good choice?
Metals are conductors and allow heat to flow through.
500
How many atoms are in the chemical formula?
Na3HO5
9 atoms
500
In July 1994 the comet Shoemaker - Levy 9 collided with the planet Jupiter, as scientists had predicted. To be able to accurately predict when a comet will collide with a planet, it is essential to understand --
A. the composition of a planet's atmosphere
B. the gravitational attraction that exists between all bodies
C. the attraction of opposite poles of a magnet to each other
D. the formation of comets
B. the gravitational attraction that exists between all bodies