WorksheetsUnit 1 Review 2020
Total questions: 20
Worksheet time: 16mins
Which scientist proposed a model of the atom in which atoms were positively charged spheres with negative electrons embedded in it?
James Chadwick
J. J. Thomson
John Dalton
Niels Bohr
Which scientist proposed this model of the atom (Dalton, Thomson, Rutherford, Bohr)?
(a)
Check the box for the most current model of the atom.
What is the atomic mass of oxygen?
(a)
What is the chemical symbol of mercury?
(a)
On the periodic table, in which period is copper (Cu)?
(a)
what is the atomic number of sodium?
(a)
How many protons are shown in this model of Helium?
(a)
The negative component of an atom is called...
Proton
Neutron
Electron
Nucleus
Jason investigated the effect of various colored lights on plant growth. he hypothesizes that plants will grow taller under a blue light.
What is the DEPENDENT variable?
different colored lights
type of plant
amount of water
growth of the plant
Charlie is in a paper airplane flying contest. He tries several different designs using a standard sheet of notebook paper.
the standard piece of notebook paper is a -
independent variable
control
dependent variable
constant
Charlie is in a paper airplane flying contest. He tries several designs using a standard piece of notebook paper.
The way the airplane flies is the -
independent variable
control
dependent variable
constant
Jason investigated the effect of various colored lights on plant growth. He hypothesizes that plants will grow taller under a blue light.
What is Jason's INDEPENDENT variable?
the growth of the plant
amount of water
type of soil
different colors of light
Beth is trying to break the record for the biggest bubble gum bubble. she usually chews Pop! bubble gum but she will test different types of bubble gum to see which one will blow the biggest bubble.
The brands of gum are Beth's-
control
dependent variable
independent variable
constant
Charlie is in a paper airplane flying contest. He tries several designs using a standard piece of notebook paper.
The type of paper airplane design is Charlie's -
independent variable
constant
control
dependent variable
Joseph wants to know which brand of fish food will make his goldfish grow the largest. He will use his usual fish food and 2 other brands.
What is the DEPENDENT variable in this experiment?
the size of the tanks
the type of fish food
the number of fish
the length of the fish
Julia designed an experiment to determine the effectiveness of 3 different gasoline additives for improving gas mileage. The car that is used as the experimental control should receive-
gasoline and additive 1
gasoline only
gasoline and all the additives
gasoline and additives 1 and 2
Beth is trying to break the record for the biggest bubble gum bubble. she usually chews Pop! bubble gum but she will test different types of bubble gum to see which one will blow the biggest bubble.
The size of the bubble is-
dependent variable
independent variable
constant
control
Beth is trying to break the record for the biggest bubble gum bubble. she usually chews Pop! bubble gum but she will test different types of bubble gum to see which one will blow the biggest bubble.
Beth uses Pop! bubble gum as her-
independent variable
control
constant
dependent variable
Jason investigated the effect of various colored lights on plant growth. He hypothesizes that plants will grow taller under a blue light. He uses blue, green, red and white light.
What was the control group?
plants grown under red light
plants grown under green light
plants grown under blue light
plants grown under white light
