What is a chemical change?

a substance changes into a different substance

The atomic number tells us

how many protons and electrons the atom has

The atomic mass tells us

how many protons and neutrons the atom has

a chemical combination of two or more elements

smallest part of element that keeps property of the element

What part of an atom are responsible for chemical reactions?

electrons on the outermost shell

A pure substance that cannot be broken down any further

the original substances that react together

Valence electrons are

the electrons on the outer shell of the atom

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Periodic Table & Atomic Structure

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#Chemistry #Atoms #Atomic #Atom #Elements

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Questions 24

Answers

1
The number at the top of each square in the periodic table is the
atomic principle
atomic sequence
atomic register
atomic number
2
The number at the bottom of each square on the periodic table is the
atomic symbol
atomic sequence
atomic number
atomic mass
3
What is a chemical change?
when a substance changes from solid to liquid
when a substance changes from liquid to gas
when gas condenses into a liquid
a substance changes into a different substance
4
The three subatomic particles are
probiotics, neurons, electrons
programs, networks, executives
protons, neutrons, electrons
5
Where are the neutrons located?
nucleus
shell
orbit
6
Where are the protons located?
orbit
nucleus
shell
7
What kind of charge do neutrons have?
negative
uncharged
postive
8
A chemical reaction that takes in energy in the form of heat is
technothermic
ectothermic
exothermic
endothermic
9
Where is 99.9% of an atom's mass located?
nucleus
shell
orbit
neutron
10
The atomic number tells us
how many protons and neutrons the atom has
how many neutrons and electrons the atom has
how many atoms there are
how many protons and electrons the atom has
11
A chemical reaction that produces heat is
technothermic
ectothermic
exothermic
endothermic
12
What kind of charge do protons have?
negative
positive
uncharged
13
The letters in each square of the periodic table is the
atomic number
atomic mass
atomic letters
atomic symbol
14
The atomic mass tells us
how many protons and electrons the atom has
how many protons and neutrons the atom has
how many electrons and neutrons the atom has
how many protons, neutrons, and electrons the atom has
15
What kind of charge do electrons have?
negative
positive
neutral
16
What is a compound?
a colloid
a chemical combination of two or more elements
a physical mixture of two or more elements
a suspension
17
Who invented the periodic table
Timmothy Stowe
Dmitri Mendeleev
Emil Zmaczynski
Theodore Benfey
18
An atom is
a proton
a neutron
the smallest unit of life
smallest part of element that keeps property of the element
19
Where are electrons located?
ontario
nucleus
shell
norbit
20
What part of an atom are responsible for chemical reactions?
protons in the nucleus
electrons on the outermost shell
All of the electrons
neutrons in the nucleus
21
An element is
Fire
Earth
Wind
A pure substance that cannot be broken down any further
22
The law that states that nothing is lost and nothing is gained in a chemical reaction is
The conservation of mass
The conservation of force
The conservation of math
The conservation of electrons
23
What are reactants
the original substances that react together
the new substance that is formed in a chemical reaction
the way someone responds to a new situation
electrons on the outermost shell of an atom
24
Valence electrons are
the electrons inside the nucleus of an atom
the electrons on the inner shell of an atom
the total number of electrons an atom has
the electrons on the outer shell of the atom

Periodic Table & Atomic Structure Flashcards | StudBud