WorksheetsReview Term 1-Substances and matter + parts of atom
Total questions: 25
Worksheet time: 30mins
Which is a substance?
fruit salad
granola cereal
Spaghetti
Table salt
Which is the best description of what happens during a chemical reaction?
A substance goes through a chemical change.
The physical properties of a substance are changed.
A new substance is formed during a chemical change.
The type of matter in the substance remains unchanged.
Which term means "a combination of two or more substances that keep their identities?
matter
mixture
solution
compound
Which term or phrase best describes what happens when a tomato rots?
physical change
chemical change
conservation of matter
formation of a compound
Each ball shown in the diagram represents a type of atom. Balls of the same shade and size represent the same kind of atom. Which diagram shows a mixture?
1
2
3
4
Ammonia is made up of two pure substances: nitrogen and hydrogen. What can be true for ammonia, nitrogen, and hydrogen?
Ammonia is a mixture, and nitrogen and hydrogen are elements.
Ammonia is a mixture, and nitrogen and hydrogen are compounds
Ammonia is a compound, and nitrogen and hydrogen are elements.
Ammonia is an element, and nitrogen and hydrogen are compounds.
Study the flow chart showing the organization of matter. What term is missing as indicated by the question mark in the flow chart?
compounds
metals
molecules
solutions
Which term refers to matter that could be heterogeneous?
compound
element
mixture
solution
Which is an example of a homogeneous mixture?
air
soil
silver
water
What composes an element?
atoms of the same structure
compounds of the same structure
mixtures of different substances
molecules of different structures
Two students are working in the laboratory with a mixture of sand and water. Which piece of equipment should the students use to separate the mixture?
Two substances in a mixture differ in density and particle size. These properties can be used to
separate the substances
chemically combine the substances
determine the freezing point of the mixture
predict the electrical conductivity of the mixture
The molecule O3 is a(n)
element
compound
solution
mixture
When two or more substances are physically combined, the results is a(n)
chemical change
element
compound
mixture
The air that you breathe is an example of a gaseous
solid
compound
element
solution
Which is an example of a correct unit for density?
g
mL
g/mL
mL/g
Which of the following is evidence that a physical change has occurred?
broken glass
rust
bubbles
formation of a solid precipitate
Matter always has: (pick two)
mass
length
volume
temperature
What is an element?
a substance made of two or more atoms
a pure substance made of only one kind of atom
a combination of two or more substances
anything that takes up space and has mass
