Vocabulary
Sample Test Items
100
Define what an atoms is.
The smallest unit of matter
100
Michael left his bicycle laying in the yard during several rain storms. When Michael went to ride his bicycle again, he noticed rust on the metal bicycle chain.
What inference can Michael make about the rust on the metal bicycle chain?
A. Rust formed on the metal bicycle chain because it was covered with too much lubricant.Rust formed on the metal bicycle chain because it was covered with too much lubricant.
B. Rust formed on the metal bicycle chain because it had been left out in direct sunlight.Rust formed on the metal bicycle chain because it had been left out in direct sunlight.
C. Rust formed on the metal bicycle chain because elements from the rain, the air, and the metal chemically combined.Rust formed on the metal bicycle chain because elements from the rain, the air, and the metal chemically combined.
D. Rust formed on the metal bicycle chain because the bicycle was left laying on its side.
C
200
What is a compound?
Two or more atoms of different elements bonded to form a new substance with new properties.
200
A student lists three properties of atoms and molecules in a table.
Which property(ies) is (are) correct?
A. Properties 1 and 2Properties 1 and 2
B. Properties 2 and 3Properties 2 and 3
C. Property 1 onlyProperty 1 only
D. Property 2 only
A
300
What is a molecule?
Two or more atoms bonded together.
300
Which statement is true about atoms?
A. Atoms are small, solid spheres.Atoms are small, solid spheres.
B. Atoms are larger than molecules.Atoms are larger than molecules.
C. Atoms can be seen without scientific equipment.Atoms can be seen without scientific equipment.
D. Atoms can be found in all types of matter
D
400
Which term defines the smallest physical unit of a substance that can exist independently?
A. Atoms
B. Compound
C. Element
D. Molecule
A
400
Chloe made a list of things she observed at home.
What are the different kinds of matter that Chloe could identify from the list?
a. only air
B. only steam
C. air, light, and steam
D. air, steam, and water
D
500
Explain the difference between a Molecule and a compound.
A compound is two or more atoms of different elements bonded together to form something new and a molecule is two or more atoms bonded together.
500
A teacher asked her students to write down a pair of substances that chemically combine with each other to form a new substance. The table shows the responses of four different students.
Which students’ responses are correct?
a. Rose and Rafael
b. Rafael and Jonathan
c. Jacqueline and Rose
d. Jacqueline and Jonathan
C.