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atoms
compounds
mixtures
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vocabulary
100
The nucleus of an atom consists of:
protons and neutrons
100

True or False, Carbon Dioxide (CO2) is a compound?

True

100
Which of the following is not a mixture? A: cereal and milk B: koolaid C: water D: fruit salad
c. water
100
Are there more compounds or more elements?
compounds
100
a substance made up of two or more elements chemically combined
compound
200
A single proton has what electrical charge?
positive charge
200

True or False: The ratios of the elements in a compound are always fixed.

For example, water is always H2O, never a different ratio.

True

200
How many classifications of mixtures are there?
Two
200

A mixture is two or more substances. It __________ be separated? A. Can B. Can not

A. Can

200
The smallest particle of an element that still has the properties of that element
atom
300
An element is determined by the number of:
protons
300

True or False: It is easy to separate the elements of a compound.

False

300
Which is the best way to get salt from salty water? a. evaporation b. filtration c. distillation
a. evaporation
300
Salad dressing a. Homogenous b. Heterogenous
b. Heterogenous
300
The negatively charged particles orbiting the nucleus of the atom making up the electron cloud (almost no mass)
electron
400
Which particles have approximately the same size and mass as each other?
protons and neutrons
400
Is table salt a compound?
Yes - NaCl
400
What is the correct order for obtaining salt from a mixture of sand and salt? a. dissolving in water - filtration - evaporation b. evaporation - filtration - dissolving in water c. filtration - dissolving in water - evaporation
a. dissolving in water - filtration - evaporation
400
Black coffee a. Homogenous b. Heterogenous
a. Homogenous
400

Mixture that is the same throughout is called _______.

homogeneous

500

What are the three basic components of an atom?

protons, neutrons, and electrons

500
True or false? The properties of a compound will be the same as the properties of the elements that make up the compound.
False
500

Which one of the following is a mixture? Rust, Oxygen Water, Sea water

Sea water

500
Which of the following is an element? Sugar Water Steam Snow Iron
iron
500
Where two or more substances are mixed together but not chemically combined, this substance is called
mixture