Early Chemistry Review

Early Chemistry Review

Multiple Choice

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

• 2

• 34

• 36

• 40

Multiple Choice

How many protons does this isotope of titanium have?

• 22

• 26

• 48

• 70

Multiple Choice

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Multiple Select

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?

I. ⁷⁷₃₅X

II. ⁷⁷₃₃X

III. ⁸¹₃₇X

IV. ⁸¹₃₅ X

• I

• II

• III

• IV

Multiple Choice

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Multiple Choice

What is the proper name for an element with 76 protons and 114 neutrons?

• Osmium-114

• Osmium-76

• Osmium-190

• Osmium-190.23

Multiple Choice

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

Multiple Choice

What charge does a neutron have?

• positive
• negative
• no charge
• neutral

Multiple Choice

Which of the following determines the type of element that an atom makes?

• The size of the nucleus.
• The number of protons.
• How much the atom weighs.
• The number of neutrons.

Multiple Choice

In a neutral atom, what is the number of protons equal to?

• The number of electrons.

• The number of neutrons.

• The number of molecules.

• The number of nuclei.

Multiple Choice

Where is the proton found in an atom?

• nucleus

• orbiting around the nucleus

• protons don't exist o_O

• Justmir is hiding it.

Multiple Choice

What is the atomic mass of Copper?

• 63

• 29

• 34

• 92