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Chemistry

Chemistry

KG - University

NGSS covered

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Chemistry
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

What kind of change is a phase change?

Physical - it's still the same substance
chemical - it's made of chemicals 

Tags

NGSS.MS-PS1-4

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

A chemical change happens when...

a substance is changed at the atomic level 
bonds are broken and formed 
a new substance is made
all of the above! 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

A catalyst  

is added to a reaction to make it slow down 
breaks apart and is changed 
provides an energetic short cut to the products 

Tags

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

Chemical Formulas ...

are written in alphabetical order 
represent the destruction or creation of atoms 
represent how atoms are arranged in a chemical reaction 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

The compounds or elements present at the end of a reaction 

reactants
catalyst
products
energy 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

The compounds and elements that are present at the beginning of a reaction:

reactants
catalyst
products
energy 

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which of the following reactions is a combustion reaction ? 

MgCO3 + O2 → MgO + CO2  
C3H8 + 5O2 → 3CO2 + 4H2O 
6CO2 + 6H2O → C6H12O6 + 6O2 
6CO2 + 6H2O → C6H12O6 + 6O2 

Tags

NGSS.HS-PS1-4

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