What is the Law of Definite Proportions?

Elements combine in the same ratio by mass to form compounds

Atomic mass is the mass of an element...

based on the average mass of all isotopes

The study of turning metals into gold

What is a cathode ray tube?

A device that emits a beam of electrons

Atoms w/ the same # of protons but a different # of neutrons

How do you find the number of neutrons in an atom?

Subtract the number of protons from the mass number

Aristotle believed that...

Matter is composed of Earth, Wind, Fire, Air, & Quintessence

A positively charged particle found in the nucleus

How did Rutherford come up with this model of the atom?

Through his gold foil experiment

A neutral particle found in the nucleus

The dense positively charged center of atoms made up of p &n

To find the mass number of an atom you...

Add the number of protons and the number of neutrons

What is the Law of Multiple Proportions?

Elements can combine in more than one way to form compounds

What is the Law of Conservation of Matter?

Matter is neither created nor destroyed in a chem reaction

Democritus believed that...

Matter is made of tiny indivisible particles called atomos

A negatively charged particle found outside the nucleus

An atom is neutral because...

Atoms have the same number of protons and electrons

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Chapter 3 Chem Review

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Questions 42

Answers

1
The number of protons, electrons, and neutrons in an atom are the same; true or false?
True
False
2
What is the Law of Definite Proportions?
Elements can combine in more than one way to form compounds
Matter is neither created nor destroyed in a chem reaction
Elements combine in the same ratio by mass to form compounds
3
What is transmutation?
Changing metals into gold
A fictitious word
Changing metals into water
Changing metals into silver
4
Which of the following is a type of radiation?
Gamma
Alpha
All of the above
Beta
5
Atomic mass is the mass of an element...
based on the atomic number divided by the # of isotopes
based on the sum of the mass of all isotopes added together
based on the average mass of all isotopes
based on the average mass of all elements
6
What is alchemy?
A fictional term used in Harry Potter
The study of turning metals into water
The study of turning metals into gold
The study of turning metals into silver
7
Who discovered the three types of radiation?
Dalton
Thomson
Rutherford
Lavoisier
8
What is this?
A cathode ray tube
A piece of equipment used in Chemistry
A beaker
A flask
9
The X in this picture stands for...
Atomic number
Element symbol
Mass number
10
What is a cathode ray tube?
A device that emits a beam of light
A device that emits a beam of protons
A device that emits a beam of electrons
A device that emits a beam of neutrons
11
Which of the following is part of Dalton's atomic theory?
Atoms of different elements have different masses
All atoms of a given element are identical
All of the above
Atoms can neither be created or destroyed
12
Who discovered the atomic number?
Goldstein
Moseley
Chadwick
Rutherford
13
What is an isotope?
Atoms w/ the same # of neutrons but a different # of protons
Atoms w the same # of protons but a different # of electrons
Atoms w the same # of electrons but different # of neutrons
Atoms w/ the same # of protons but a different # of neutrons
14
Who discovered the atomic neutron?
Chadwick
Rutherford
Moseley
Goldstein
15
How do you find the number of neutrons in an atom?
Subtract the number of electrons from the mass number
Add the number of protons to the number of electrons
Subtract the number of protons from the mass number
Add the number of protons to the number of neutrons
16
Each element has its own unique number of ______ that determines its ________?
electrons/mass number
electrons/atomic number
protons/atomic number
protons/mass number
17
What is the answer to the life, the universe, and everything?
42
Love
Money
Friendship
18
Who created this model of the atom?
Jimmy Neutron
Rutherford
Dalton
Bohr
19
What is the name of this atomic model?
Plum Pudding
Bohr
Jimmy Neutron
Planetary
20
Who created the Law of Definite proportions?
Dalton
Proust
Lavoisier
Thomson
21
Aristotle believed that...
Matter is composed of protons, neutrons, and electrons
Matter is composed of Earth, Wind, Fire, Air, & Quintessence
Matter is composed of matter
Matter is made of tiny indivisible particles called atomos
22
Who thought that the original four elements were; Earth, Wind, Fire, and Water?
Democritus
Lavoisier
Aristotle
Thomson
23
Who came up with the Law of Conservation of Matter?
Thomson
Rutherford
Lavoisier
Proust
24
A proton is...
A negatively charged particle found in the nucleus
A positively charged particle found outside the nucleus
A negatively charged particle found outside the nucleus
A positively charged particle found in the nucleus
25
The Z in this picture stands for...
Element symbol
Atomic number
Mass number
26
How did Rutherford come up with this model of the atom?
Through his platinum foil experiment
Through the silver foil expdriment
Through his gold foil experiment
Though his sapphire foil experiment
27
Who created this model?
Thomson
Rutherford
Dalton
Bohr
28
A neutron is...
A neutral particle found outside the nucleus
A neutral particle found in the nucleus
A positively charged particle found outside the nucleus
A negatively charged particle found in the nucleus
29
What is the nucleus?
The dense positively charged center of atoms made up of n
The dense positively charged center of atoms made up of e &n
The dense positively charged center of atoms made up of p &n
The dense positively charged center of atoms made up of p& e
30
To find the mass number of an atom you...
Add the number of protons and the number of neutrons
Subtract the number of protons from the number of neutrons
Subtract the number of electrons from the number of neutrons
Add the number of protons and electrons
31
Who discovered the electron?
Thomson
Lavoisier
Proust
Aristotle
32
What is the Law of Multiple Proportions?
Elements combine in the same ratio by mass to form compounds
Matter is neither created nor destroyed in a chem reaction
Elements can combine in more than one way to form compounds
33
The A in this picture stands for...
Mass number
The element symbol
Atomic number
34
What is the Law of Conservation of Matter?
Made is created and destroyed in a chemical reaction
Pholgistan is released from matter during a chem reaction
Matter is neither created nor destroyed in a chem reaction
35
Democritus believed that...
Matter is composed of protons, neutrons, and electrons
Matter is composed of matter
Matter is made of tiny indivisible particles called atomos
Matter is composed of Earth, Wind, Fire, Air, & Quintessence
36
Who discovered the proton?
Rutherford
Goldstein
Moseley
Chadwick
37
An electron is...
A positively charged particle found outside the nucleus
A negatively charged particle found outside the nucleus
A negatively charged particle found in the nucleus
A positively charged particle found in the nucleus
38
What is the name of this atomic model?
Rutherford
Planetary
Plum Pudding
Bohr
39
What were the original 4 elements?
Hot, Cool, Dry, and Moist
Earth, Hot, Dry. and Fire
None of the above
Earth, Fire, Air, and Water
40
What did the gold foil experiment prove?
An atom contains a tiny, dense positively charged nucleus
That an atom is mostly empty space
An atom contains a tiny, dense negatively charged nucleus
Both A and B are correct
41
Who created the Law of Definite proportions?
Thomson
Proust
Dalton
Lavoisier
42
An atom is neutral because...
They want to be
Atoms have the same number of protons and neutrons
Atoms have the same number of electrons and neutrons
Atoms have the same number of protons and electrons

Chapter 3 Chem Review Flashcards | StudBud