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Chemistry Test - Lesson #28 Flashcards | StudBud
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Chemistry Test - Lesson #28
Chemistry Test - Lesson #28
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Answers
1
Which element is a liquid at room temperature?
helium
mercury
nitrogen
oxygen
2
A combination of different elements joined together is called a
compound
elements
molecule
atom
3
One small particle of an element is called an
compound
molecule
atom
elements
4
Which compound does NOT contain oxygen?
NaCl
C6H8O6
NH3
H2O
5
What do scientists call symbols used to show compounds?
chemical formulas
math formulas
chemistry
chemical reactors
6
What do you call a scientist who studies what all things in the universe that we can see are made from?
biologist
geologist
astronomer
chemist
7
The chemical symbol for carbon is C.
False
True
8
Which element is a gas at room temperature?
mercury
tin
hydrogen
gold
9
The marshmallow did not change when head was added.
True
False
10
Which of these elements is one of the most common elements in the universe?
argon
krypton
cerium
carbon
11
What is the chemical formula for water?
C
NaCl
H2O
C12H22O11
12
Living things need elements to live and grow.
True
False
13
Labels on food packages tell us which elements are in that food.
False
True
14
What element do we need to make our bones strong?
calcium
krypton
argon
uranium
15
When two or more atoms are joined together, they make a
atom
molecule
compound
elements
16
Scientists know that everything in the universe that we can observe is made from
atom
compound
elements
molecule
17
What does the Periodic Table of Elements show?
chemists
compounds
molecules
elements