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Post Intro to Chemistry

Last updated over 6 years ago

12 questions

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Question 1

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Question 2

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Question 3

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Question 4

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Question 5

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Question 6

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Question 7

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Question 8

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Question 9

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Question 10

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Question 11

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Question 12

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Which of the following is an element

salt

water

oxygen

air

The smallest particle of an element that retains all of the properties of that element is called

electron

atom

molecule

nucleus

In order to calculate the density of an object

mutiply the length times width times height

the product of the mass and the volume

the volume divided by the mass

the mass divided by the volume

Which of the following is a compound

LiO2

Xe

Na

B

The smallest particle of a compound that retains all of the properties of that compound is called

atom

proton

molecule

element

Which of the following is an example of a chemical reaction.  Check all that apply

Burning wood

Exploding firework

Metal rusting

Cutting the lawn

If the density of 10g of water is 1g/ml   What is the density of 100g of water?

1g/ml

10g/ml

100g/ml

1000g/ml

Which of the following is not part of an atom

neutron

electron

cell

proton

How many protons are in an atom of Hydrogen

2

1

3

4

How many molecules are in 3CaCO3

3

6

9

27

Which of the following are categorized as a mixture

air

CO2

saltwater

Helium

Which of the following can be separated by physical means

element

compound

mixture