P6 Adorabloodthirsty

1.

1 point

What is the smallest unit of an element?

An atom

An ion

A molecule

A proton

2.

1 point

An electron cloud is the area around a nucleus of an atom where its electrons are least likely to be found.

True

False

3.

1 point

What are the charges of a proton?

8

no charge

-

+

4.

1 point

What is an isotope?

An atom with the same atomic number but different mass numbers.

An atom with the same mass number but different atomic numbers.

The atom

5.

1 point

A hypothesis is a possible explanation for a problem using what you know and what you observe.

True

False

6.

1 point

Line graphs are used only to show how fast objects are moving.

True

False

7.

1 point

Who is the father of nuclear physcicts?

J.J Tomson

James Chadwick

Albert Eisntein

Ernest Rutherford

8.

1 point

What is the first element on the periodic table?

Carbon

Helium

Lithium

Hydrogen

9.

1 point

The Greecks only believed in these four elements, earth, air, fire, and water.

True

False

10.

1 point

Which element has the symbol Na?

Sodium

Carbon

Nickel

Hydrogen

11.

1 point

The number of electrons is determined by the number of______?

12.

1 point

What is the charge for an electron?

+

no charge

-

2

13.

1 point

J.J Thomson discovered the nuclues.

True

False

14.

1 point

What is the charge for a neutron?

9

+

-

no charge

15.

1 point

1,000 kilograms equals 10 gram.

True

False

16.

1 point

A half life is the time it takes for one half of a radioactive substance or sample to decay?

True

False

17.

1 point

How many electrons are on the third energy level?

18

2

8

32

18.

1 point

What is the element with the common atomic mass of 1?

Hydrogen

Helium

Carbon

Lithium

19.

1 point

What is an elements atomic number?

The number of electrons

The number of neutrons

The number of protons

20.

1 point

The electrons are located in the nucleus.

True

False

21.

1 point

How do you find the atomic mass of an atom?

Add the number of protons and nuetrons

Add the number of electrons and protrons

Add the number of neutrons and electrons

22.

1 point

The number of protons and electons are the same because____?

its a coincidence

Protnons are positive and electons are negative

electons are on the outside of the nuclues

protons have no charge

23.

1 point

John Dalton discovered the electons.

True

False

24.

1 point

What is the energy level rule when finding the number of electrons on each energy level?

2 x n

1 x 6n

2 x n^2 (n squared)

1 x n^2 (n squared)

25.

1 point

Bar graphs are used for comparing information collected by counting.

True

False