Chemistry
Scientific Investigations
Astronomy
Random
100
When ice melts its state of matter changes. What type of change is this?
Physical Change
100
Terry designed an experiment using identical toy cars rolling down identical ramps. At the end of each ramp, he placed a different material. Car A rolled down the ramp onto the tile floor. Car B rolled down the ramp onto carpet. Car C rolled down the ramp onto coarse sandpaper. He measured the distance from the end of the ramp to where the car stopped. His data is shown in the table below.
1. What was the test variable in the experiment?
A. The type of cars.
B. The type of ramps used.
C. The distance the car travelled.
D. The material at the end of the ramp.
D. The material at the end of the ramp
100
You go to the moon, what happens to your mass and your weight?
mass remains the same, weight decreases.
100
You want to build a model of an atom. What are 3 parts you should include?
protons, neutrons, and electrons
200
Metal is rusting. What type of change is that?
Chemical Change
200
Terry designed an experiment using identical toy cars rolling down identical ramps. At the end of each ramp, he placed a different material. Car A rolled down the ramp onto the tile floor. Car B rolled down the ramp onto carpet. Car C rolled down the ramp onto coarse sandpaper. He measured the distance from the end of the ramp to where the car stopped. His data is shown in the table below.
What was the outcome variable in the experiment?
A. The type of cars.
B. The type of ramps used.
C. The distance the car travelled.
D. The material at the end of the ramp.
C. The distance the car travelled.
200
Venus is NOT the closer planet to the Sun however it is the hottest. Why?
Has the thickest atmosphere. Traps the Sun's heat in.
200
There are 3 state of matter: solid, liquid and gas. All the particles in each state are moving, depending on how much room they have. List the states of matter from which has the most space between their particles to the one that has the least space between their particles.
Gas, liquid, solid
300
How can you speed up a chemical reaction?
Increase the temperature
300
Which part of the experiment is an example of repetition?
A. height of ramp
B. recording data
C. repeated trials
D. different materials
C. repeated trials
300
What keeps the planets in their orbit revolving around the Sun?
Sun's gravity
300
You add sugar (solute) & Kool-Aid (solute) to water (solvent). The sugar & Kool-Aid dissolves. What did you just make?
Solution
400
You burn a 20g piece of paper. What is the mass of the ash and smoke after you burn it?
20g
Law of Conservation of Mass states that the reactants will ALWAYS equal the products (just in a different form)
400
Omar is interested in Terry’s data. What should he do to replicate his experiment?
A. Use different materials
B. Measure in meters.
C. Use the same procedures
D. Place his data in a line graph.
C. Use the same procedures
400
What is in the universe?
Billions of galaxies. Our galaxy "The Milky Way" is just 1 galaxy in our universe.
400
Carbon dioxide (CO2), water (H2O) and glucose (C6H12O6) can all be found in the formula for photosynthesis. Are they all elements or compounds?
Compounds
500
List 3 indicators that a chemical change has occurred.
change in color
odor produce
substance (composition) change
500
Ms. Ibanez wants to know which location in her house is best for growing African violets.
She has 3 African violets. She puts 1 on the balcony, 1 by the kitchen window, and 1 on the mantel in the living room. Each plant has the same size pot and the same soil, and Ms. Ibanez gives each plant the same amount of water. What is the test and outcome variable in this investigation?
A. How tall the plants grow & The location of the plant.
B. The size of the pot & The amount of water the plants receive.
C. The amount of water the plants receive & How tall the plants grow
D. The location of the plant & How tall the plants grow
D. The location of the plant & How tall the plants grow
500
Which planet is considered Earth's twin because it is almost the same size as Earth?
Venus
500
What are the 2 products made during photosynthesis?
glucose and oxygen