Physical & Chemical Changes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Phase change, cutting, and tearing are all examples of _____ changes. | physical
🗑
|
||||
| When baking soda and vinegar are ______ bubbles form and rise to the top of the liquid causing a new substance to be formed. | combined
🗑
|
||||
| Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar because a ______ is formed when baking soda and vinegar are mixed. | gas
🗑
|
||||
| An _____ is a pure substance that cannot be broken down into a simpler substance. | element
🗑
|
||||
| NaCl is an example of a ______. | compound
🗑
|
||||
| When elements bond together or when bonds of compounds are broken and form a new substance this is known as a chemical ______. | change
🗑
|
||||
| When observing, a good indicator that a new substance has been formed is a substance has _____ color. | changed
🗑
|
||||
| When two liquids are mixed, and a ______ substance is forms, this is evidence that a chemical change has taken place. | solid
🗑
|
||||
| If you have a substance, and it can be concluded that a chemical change has happened if there is a _____ change. | color
🗑
|
||||
| When two clear liquids are mixed, producing a white solid which settles to the bottom, this would be and example of a _____ change. | chemical
🗑
|
||||
| _____ is an example of a chemical change. | fireworks
🗑
|
||||
| Electrical wires are made from metals such as copper and chromium because _____ are good conductors of electricity. | metals
🗑
|
||||
| Metals are not _____. | brittle
🗑
|
||||
| When white crystals are added to a clear liquid. The crystals _____ in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. A chemical change has taken place when observing the change in temperature. | dissolved
🗑
|
||||
| Bubbles being _____ off is evidence of a chemical change. | given
🗑
|
||||
| Changing the form of a substance, or the _____ of a substance is a physical change. | appearance
🗑
|
||||
| Production of a gas (bubbles); phase change (solid to liquid); a precipitate forms; change in shape; crystals dissolving; and heat produced - how many of these are observations that a new substance has formed? | three
🗑
|
||||
| Another term for chemical change that involved combining different substances and producing a new substance is known as chemical _____. | reaction
🗑
|
||||
| _____ can be released during a chemical change. | energy
🗑
|
||||
| A granular substance is added to a liquid, suggested evidence of a chemical change would be if the _____ gives off heat. | liquid
🗑
|
||||
| When _____ or more substances combine to form a NEW substance is a chemical change. | two
🗑
|
||||
| When two substances are mixed, they might form a new substance, evidence of this could be if the temperature of the _____ decreases. | mixture
🗑
|
||||
| A _____ nail is a chemical change. | rusty
🗑
|
||||
| Ice _____ is a physical change. | melting
🗑
|
||||
| A student mixes two clear liquids together. After a few minutes, a white powder can be seen settling on the bottom of the test tube, the two _____ liquids have combined to form a new substance. | clear
🗑
|
||||
| Bubbles and fizzing would _____ a new substance has been formed. | indicate
🗑
|
||||
| Smashing a piece of _____ is a physical change. | chalk
🗑
|
||||
| Change in the _____ of state is a chemical change. | matter
🗑
|
||||
| When sugar is heated over a flame, it turns black. The color of the _____ changing is evidence of a chemical change. | sugar
🗑
|
||||
| _____ of a piece of paper is a chemical change. | burning
🗑
|
||||
| All chemical reactions, ______ a new substance. | form
🗑
|
||||
| A student has 250 mL of two different clear liquids, they pour one liquid into the other. The mixtures turns bright red, then begins to turn quite cold. The first evidence of a chemical change is the color ______ bright red. | turned
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
oakhills
Popular Science sets