v2 Intro to Chemistry Quiz #1

Last updated about 5 years ago

13 questions

Library

v2 Intro to Chemistry Quiz #1

Last updated about 5 years ago

13 questions

Question 1

Determine which of the following represent a chemical change (select all that apply)

baking a cake

painting the walls

forest fire

boiling soup

freezing leftovers

Question 2

Does a chemical reaction take place during a chemical change?

Yes

No

Question 3

What are the reactants in the equation above?

6CO2 + 6H2O

6O2 + C6H12O6

Question 4

What are the products in the equation above?

6CO2 + 6H2O

6O2 + C6H12O6

Question 5

List the Elements that are present in the chemical equation above

Question 6

In the last molecule, how many atoms of carbon are there?

Question 7

What does the coefficient of 6 in front of water tell you?

there are six atoms of water

there are 6 atoms of hydrogen

there are 6 molecules of water

Question 8

In the chemical equation above, are the products the same substances as the reactants

yes

no

Question 9

In your own words, describe the law of Conservation of Matter

Question 10

10.

You add 20g of baking soda and 30g of vinegar into a flask. A chemical reaction happens. What do you expect the mass of the products to be?

10g

20g

30g

50g

Question 11

11.

After the reaction the flask felt cold. Based on the temperature change, what type of reaction is it?

endothermic reaction

exothermic reaction

Question 12

12.

Determinewhich of the following is an element, compound or mixture

Draggable item		Corresponding Item
water		mixture
salt water		element
chlorine		compound

Question 13

13.

Extra Credit. Balance the Equation - Use the space to show your work