Chemical Reactions unit test review - CMS - Ms. Counts
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| If glycerin has a higher density than water, will it sink or float? | show 🗑
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| show | Float
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| Substances were combined in beakers. In beaker 1 there was no color change, no solid formed, & there are no bubbles. In beaker 2 there was a color change, a solid formed, bubbles formed, & a gas produced. Which beaker shows a chemical reaction? | show 🗑
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| If zinc and sulfur are combined to form zinc sulfide and a color change happened, is this an indication that a chemical reaction was formed? | show 🗑
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| show | This is a chemical reaction because the atoms in the wood react with oxygen and rearrange to form new combinations of atoms and molecules
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| Matter can change its form but ___________ | show 🗑
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| show | 2Cl and OH
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| Is iron rusting a chemical or physical change? | show 🗑
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| show | physical change
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| Is sugar dissolving a chemical or physical change? | show 🗑
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| show | chemical change
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| show | Unbalanced
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| Is the following equation balanced or unbalanced? 2H + 2Cl -> 2HCl | show 🗑
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| What law states that atoms cannot be created or destroyed, only rearranged | show 🗑
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| What are the tiny particles that make up matter? | show 🗑
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| show | A color change
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| show | solid, liquid, gas
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| How many total atoms are in the reactants? 2H + 2Cl -> 2HCl | show 🗑
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| show | 3
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| show | created; destroyed; conserved
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| What is a characteristic of a substance that doesn't change? | show 🗑
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| show | Physical
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| Lacie dropped an ice cube in her coffee and the ice cube melted. Which way does the energy transfer between the ice cube and the coffee? | show 🗑
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| If you don't touch a marshmallow to a campfire flame, the marshmallow can still be roasted. Why does this happen? | show 🗑
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| Wood and oxygen are commonly burned at campfires, and all that's leftover is ash and char. Would the mass increase, decrease, or remain the same? | show 🗑
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| show | Reactants; products
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| What is the process that produces chemical change, resulting in new substances that have properties different from those of the original substance? | show 🗑
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| show | Temperature of the water
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| show | How long the bath bomb takes to dissolve
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| Rob set up the following experiment: He dropped identical blue bath bombs into a 100 mL of cold water & 100 mL of hot water, put an identical thermometer in each, observed them for 10 min & took observations every 2 min. What are his control variables? | show 🗑
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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.
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