Chemical Change is not

when a substance stays the same

is made of more than one kind of atom

118 elements, 92 of which are naturally occurring

Water is a compound because it is made up of

Atoms of two elements, H and O, chemically combined

Make an inference... The anteater...

knows it must save some ants to eat another day

Physical changes include

Melting and changes to shape and size

A pure substance that cannot be broken down into simpler substances

A combination of substances that can be physically separated

What is an inference?

A conclusion reached on the basis of evidence and background knowledge.

A true account of an activity or event

studbud

POST TEST 1

18 termsStudBud Administration22 plays

Imported from external platform

Flashcards18 cardsFPractice quizPHost liveL

Questions 18

Answers

1
Chemical Change is not
chemical reactions
when a substance combines with another to form a new substance
when a substance stays the same
the substance's composition is changed
2
What are the two main types of changes that can occur in chemistry
Chemical
Physical
Addition
Subtraction
3
Which is NOT a reason as to why the same symbols are used for the same elements all over the world?
Reduces the confusion in regards to elements
It's the way it was invented
Saves time when communicating about elements
Makes scientific research easier
4
A compound is a substance containing atoms of two or more elements joined together by chemical bonds.
True
False
5
What is its chemical formula for Sulfur dioxide?
SO
S₂O
SO2
S₂O₂
6
A compound
is made when two of the same atoms bond
is made of more than one kind of atom
cannot be broken down into smaller parts
has the same properties of its atoms
7
There are...
110 elements, 80 of which are naturally occurring
123 elements, 92 of which are naturally occurring
118 elements, 92 of which are naturally occurring
3 elements, 0 of which are naturally occurring
8
A compound's chemical formula tells you the elements and their proportions
True
False
9
Water is a compound because it is made up of
Atoms of two elements, H and O, chemically combined
Atoms of only one element: oxygen
Atoms of only one element: hydrogen
Atoms of two elements, H and O, mixed together but not chemically combined
10
Make an inference... The anteater...
leaves the homes because it has had enough to eat
knows it must save some ants to eat another day
does not destroy the ants' homes because it is kind
11
Physical changes include
Production of heat
Change of odor and composition
Light and/or heat given off
Melting and changes to shape and size
12
What is the name of this element?
Hydrogen
Oxygen
Helium
Carbon
13
An element is a...
Mix of two or more types of atoms held together by bonds
Fire, Wind and Rain
Combination of atoms chemically combined together in a fixed ratio
A pure substance that cannot be broken down into simpler substances
14
Which of the following is an Observation?
The picture on the wall is of a T-Rex.
They boy in the orange top is drawing his mother.
The chairs are green.
The boy with glasses likes playing with clay.
15
An example of a compound would be
Sulfur
Sodium
Sugar
Salt
16
A mixture is
A combination of substances that can be physically separated
A combination of substances that cannot be physically separated
The same as a compound
The same as a Element
17
What is an inference?
A comparison using like or as
A conclusion reached on the basis of evidence and background knowledge.
The who, what, where, when, and how of a story
Something you can see, hear, taste, or touch
18
An observation is?
A true account of an activity or event
Your interpretation of an activity or an event

POST TEST 1 Flashcards | StudBud