Scientific Method
Matter & Atoms
Mixtures and Solutions
Random
100
What is the first step in the scientific method?
Observe
100
How will an ice cube change states of matter if we increase the temperature of the ice cube?
a. it will turn from a liquid to a solid
b. it will turn from a solid to a liquid and eventually to a gas if we increase the temperature enough.
c. It will immediately turn into a gas.
B. It will turn from a solid to a liquid and eventually a gas if we increase the temperature enough.
100
Is water and sand a mixture or a solution?
Mixture
100
Mrs. G is trying to see how to evaporate water at the fastest rate possible. She uses 3 cups of water. Each cup has 4 ounces of water. She places a lightbulb in a different position over each cup to see which position makes the water evaporate fastest.
What is one constant in the experiment?
-The amount of water
-using water only
-the size of the cup
200
What is a hypothesis?
An educated guess about what you think the results of an experiment will be.
200
The particles/atoms that form solids are:
a. loosely packed and sliding off one another.
b. spread very far apart and bouncing off one another.
c. tightly packed and vibrating quickly.
c. tightly packed and vibrating quickly
200
Kool-aid is an example of a...
Mixture or solution?
Solution
200
What is an atom made of?
Protons, neutrons, electrons
300
What are the constants in an experiment?
All the things that are kept the same.
300
3
300
True or False: In a solution, one substance is dissolved into another.
True!
300
Matter is...
a. anything that has mass and volume and takes up space
b. has length and width
c. it doesn't matter!
a. anything that has mass and volume and takes up space.
400
What is the independent variable in the following experiment:
Mrs. Guevara wants to know which part of her porch will grow the best plants. She places one jalepeno plant in the left hand corner. She places another jalepno plant in the right hand corner. She measures each plant every week to see which is growing the fastest.
The corner where Mrs. Guevara placed the jalepeno plants.
400
Butter melting in a hot pan is an example of:
a. liquid changing to a gas
b. solid changing to a liquid
c. solid changing to a gas
B.
400
The only way to separate a mixture is through ______________.
Evaporation
400
When combining substances to form a mixture, do the substances lose their characteristics?
Yes or No
No! In a mixture, the characteristics of each substance stay the same.
500
What is the dependent variable in this investigation?
Mrs. Guevara wants to know which part of her porch will grow the best plants. She places one jalepeno plant in the left hand corner. She places another jalepno plant in the right hand corner. She measures each plant every week to see which is growing the fastest.
The plant that grows the fastest.
500
With the addition of cold, which of the following changes is possible?
a. solid to liquid
b. liquid to solid
c. liquid to gas
B.
500
True or False: In a mixture, two become one.
False!
500
Mrs. G is trying to see how to evaporate water at the fastest rate possible. She uses 3 cups of water. Each cup has 4 ounces of water. She places a lightbulb in a different position over each cup to see which position makes the water evaporate fastest. What is the independent variable?
The position of the lightbulb over each cup.