WorksheetsChapter 7, Section 2: Compounds
Total questions: 11
Worksheet time: 18mins
why is an element is a pure substance.
It's a pure substance composed of two or more elements that are chemically combined.
An element is a pure substance because it contains only one type of particle.
it's a particle of a compound. It's formed when atoms of two or more elements join together.
all of the above
compounds can be broken down into what two types of substances?
particles and mixtures
elements and molecules
elements and particles
elements and simpler compounds
what three physical properties can be used to identify a compound
melting point
density
color
none
water is the universal solvent
true
false
Elements join in a specific ratio according to their masses to form a compound.
true
false
what is the upward force that fluids exert on all matter
gravity
density
buoyant force
mass
compounds can be broken down into smaller substances by physical changes
false
true
unique properties of water would be
wet lollollolololol
able to absorb large amount of energy before increasing in temperature
water in our body regulates our body temperature
buoyant force
which of the following is considered a common compound
proteins
carbon dioxide
water
carbon monoxide
what causes a droplet to stick to your skin
adhesion
cohesion
solvent
polar
what causes a droplet to form
cohesion
adhesion
polar
solvent
