A malleable sheet of metal used to wrap food in the kitchen is made of only aluminum.

It is a pure substance, represented by the symbol Al.

substance that contains atoms of 2 or more dif elements

Correctly state the number of hydrogen and oxygen atoms present in the formula for water?

There are two hydrogen atoms for every one oxygen atom.

Which of the following is true about a compound?

formed by chemically combining two or more elements

It is logical for the oceans' two most abundant elements to be what they are because oceans

contain water, which is composed of oxygen and hydrogen

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Duplicate of ATOMS ELEMENTS AND COMPOUNDS

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A chemistry quiz introducing the basics of elements and atoms

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Questions 17

Answers

1
Which one of these is the correct symbol for magnesium
MAG
Mg
MG
mg
2
which one of these contains 4 carbons and 6 hydrogen 's
4C6H
CH4
C4H6
10CH
3
How many of the observations are evidence that a new substance was formed?
4
3
5
6
4
A malleable sheet of metal used to wrap food in the kitchen is made of only aluminum.
It is a pure substance, represented by the symbol A
It is an impure substance, represented by the symbol Au.
It is an impure substance, represented by the symbol AL.
It is a pure substance, represented by the symbol Al.
5
What is everything in our universe made up of ?
Materials
Particals
Atoms
Dust
6
Which element would complete the chart correctly
J
Na
H
O
7
Which of these is the smallest ?
A strand of hair
Dust
An atom
A molecule
8
what is the correct symbol for oxygen
O
O2
Oxy
oxy2
9
Which element is found in large amounts in both Earth's atmosphere and oceans?
calcium
helium
silica
oxygen
10
sugar in a spoon is heated. Which would be the BEST evidence of a chemical change.
The sugar gets hotter.
The sugar turns into a colorless liquid
The sugar gets larger
The sugar gets black.
11
Which one is stands for water ?
H20
2H00
solvent
OH
12
What is a Compound?
substance that contains atoms of 2 or more dif elements
a mixture of carbon dioxide and methane
A type of element which have the most reactive properties
The name of a 50 year old pound coin
13
Correctly state the number of hydrogen and oxygen atoms present in the formula for water?
There are two hydrogen atoms for every one oxygen atom.
There is an equal number of hydrogen and oxygen
There is one hydrogen atom for every two oxygen atoms.
There are two hydrogen atoms for every four oxygen atoms.
14
which one is not a element
fluorine
oxygen
carbon
carbon dioxide
15
Which of the following is true about a compound?
It cannot be broken down into smaller pieces
formed by physically combining two or more elements
It is made up of one type of atom
formed by chemically combining two or more elements
16
What evidence would indicate that a new substance is produced?
The water becomes cloudy.
The tablets dissolve in water.
Bubbles are given off.
The water level increases slightly.
17
It is logical for the oceans' two most abundant elements to be what they are because oceans
are salty, and salt is composed of chlorine and sodium
contain mostly air, which is composed of oxygen and hydrogen
filled with life, which is composed of chlorine and sodium.
contain water, which is composed of oxygen and hydrogen

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