Question

electricity
day 5 checkpoint test

1. chemists and physicists tell us that all matter in the universe is composed of one or more of the basic substances called (8 letters)
2. atoms of every element are composed of smaller particles called

and
a. neutrons, protons, and electrodes
b. neurons, protons, and electrodes
c. neutrons, protons, and electrons
d. none of these

1. are located in the nucleus, or center, of every atom.

a. protons and electrons
b. electrons and neutrons
c. protons, neutrons, and electrons
d. protons and neutrons

1. protons have a negative charge (-). t/f
2. a negative ion is unstable because it has electrons.

a. too few
b. too many
c. half of its
d. double the

1. the atomic number of each element indicates how many and it contains.

a. electrons and neutrons
b. neutrons and protons
c. electrons and protons
d. none of these

1. all natural and man-made elements are listed in a special chart called the

a. periodic table
b. elements table
c. periodic graph
d. periodic chart

1. whenever electricity flows,

a. magnetism is created
b. it mitigates the power of magnetism
c. magnetism is lost
d. magnetism flows with it

Explanation:

1. Elements are the basic substances that make up all matter in the universe.
2. Atoms of every element are composed of smaller particles called neutrons, protons, and electrons.
3. Protons and neutrons are located in the nucleus of every atom.
4. Protons have a positive charge (+), so the statement is false (F).
5. A negative ion is unstable because it has too many electrons.
6. The atomic number of each element indicates how many electrons and protons it contains.
7. All natural and man - made elements are listed in a special chart called the periodic table.
8. Whenever electricity flows, magnetism is created.

Answer:

1. Elements
2. D. neutrons, protons, and electrons
3. D. Protons and neutrons
4. F
5. B. too many
6. C. electrons and protons
7. A. periodic table
8. A. magnetism is created