Which of the following is not a mixture?
A: cereal and milk
B: koolaid
C: water
D: fruit salad
c. water
400
Are there more compounds or more elements?
compounds
400
a substance made up of two or more elements chemically combined
compound
4000
A single proton has what electrical charge?
positive charge
4000
True or False
The proportions of the elements in a compound are always fixed.
True
4000
How many classifications of mixtures are there?
Two
4000
A mixture is two or more substances. It __________ be separated?
A. Can
B. Can not
A. can
4000
The smallest particle of an element that still has the properties of that element
atom
40000
An element is determined by the number of:
protons
40000
True or False
It is easy to separate the elements of a compound.
False
40000
Which is the best way to get salt from salty water?
a. evaporation
b. filtration
c. distillation
a. evaporation
40000
Salad dressing
a. Homogenous
b. Heterogenous
b. Heterogenous
40000
The negatively charged particles orbiting the nucleus of the atom making up the electron cloud (almost no mass)
electron
500000
Which particles have approximately the same size and mass as each other?
protons and neutrons
500000
Is table salt a compound?
Yes - NaCl
500000
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
500000
Black coffee
a. Homogenous
b. Heterogenous
a. Homogenous
500000
Mixture that is the same throughout
homogeneous
2147483647
What are The three basic components of an atom?
protons, neutrons, and electrons
2147483647
True or false?
The properties of a compound will be the same as the properties of the elements that make up the compound.
False
2147483647
Which one of the following is a mixture?
Iron sulfide
Oxygen
Water
Sea water
sea water
2147483647
Which of the following is an element?
Sugar
Water
Steam
Snow
Iron
iron
2147483647
Where two or more substances are mixed together but not chemically combined, this substance is called