Show:
Science
Tools
Class
Investigations
Liquid
Chemicals
Solid
Chemicals
Chemical Uses and Facts
100
The tool that best protects your eyes in a science lab
What are safety goggles?
100
One of the following is a property you could observe: - I think it will be sticky in water. - Stir the powder in warm water. - The powder is white and soft. - Use the dropper to add water.
What is: the powder is white and soft?
100
A clear liquid that can dissolve some crystals
What is water?
100
One of our unknowns that is a sweetener
What is sugar?
100
One of the following is a solution: - Cola drink - Fresh apple - Green salad - Vegetable soup
What is a cola drink?
200
After filtering a solution, this is the best way to test the liquid remaining in the shallow dish
What is: put it in a sunny window to evaporate?
200
One of the following is a prediction: - I marked the filter paper with pencil. - I think crystals will form on the filter paper. - I'll set the paper out to dry. - The filter paper is wet and clear.
What is: I think crystals will form on the paper?
200
It bubbles when mixed with baking soda
What is vinegar?
200
A box shaped crystal used on French fries
What is salt?
200
When testing a mystery powder, this describes what you think might happen
What is a prediction?
300
Three things that helped us work safely while performing chemical tests
What are goggles, a pail of water, and hair tied back?
300
What scientists call the one thing that changes in each part of an experiment
What is a variable?
300
This liquid identifies acids, bases, and neutrals
What is red cabbage juice?
300
Used in computers and other electronics
What is silicon?
300
Out of the five senses, this one is never used in a science lab
What is taste?
400
The reason why we put matching colored dots on each jar and its cap
What is: to avoid contamination by keeping the same jar and cap together?
400
Imagine you are testing three powders in water. You mix 1/2 spoon of powder in 25 mL of hot water. This is the one thing that changes in each test.
What is the kind of powder?
400
A six-sided crystal made of water
What is a snowflake?
400
A positive starch test would show this color
What is a purple-black color?
400
One of these sentences does NOT describe chemicals: - Things we used to wash and style our hair. - All the food in our kitchen. - Stuff in the garage to wash cars, oil, and gas - Yellow and white and dangerous
What is: yellow and white and dangerous?
500
A tool we used that is round, made of plastic, transparent, and about 6 cm across the middle
What is a petri dish?
500
The four steps to test the red unknown with vinegar, in the correct order.
What is: (1) Set up your tray, test mat, and wax paper. (2) Put a small sample of the red unknown in the compare circle. (3) Using the spoon, put a sample of the red unknown in the red circle. (4) Put 6 drops of vinegar on the sample of red unknown in the red circle.
500
This is a property of a suspension, like mixing cornstarch and water
What is: the liquid appears cloudy?
500
A combination of two unknowns that dissolves in water, crystals remain in the petri dish after two days, and the unknown that remained in the filter smells like baby powder
What are sugar and talc?
500
According to "Chemicals Are All Around Us," which of the following sentences are true about chemicals: - Even your teacher is made of chemicals. - Candy can be made from beets. - Alum is used in making pickles and cleaning water supplies. - Talc and cornstarch might be found in a diaper bag.
What is: all of them are true!